In the formulas in subparagraphs a to d of the first paragraph,(a) A is the aggregate of all amounts each of which is the salary or wages of an employee who reports for work at an establishment of the vendor situated in Québec but outside an eligible region, paid by the vendor in respect of a pay period, within the vendor’s base period, throughout which the employee spends, when at work, at least 75% of the time in undertaking, supervising or supporting, in an establishment of the vendor situated in Québec or elsewhere, but in connection with the mandates attributable to such an establishment, work that is directly related to activities of the vendor that are described in a qualification certificate issued, for the purposes of this division, to the vendor for the year in respect of a recognized business;
(b) B is the aggregate of all amounts each of which isi. the salary or wages paid by the vendor to an employee, before the particular time, in respect of a pay period, within the particular calendar year, for which the employee is an eligible employee, or
ii. the salary or wages of an employee who reports for work at an establishment of the vendor situated in Québec, other than an employee referred to in subparagraph i, paid by the vendor, before the particular time, in respect of a pay period, within the particular calendar year, throughout which the employee spends, when at work, at least 75% of the time in undertaking, supervising or supporting, in an establishment of the vendor situated in Québec or elsewhere, but in connection with the mandates attributable to such an establishment, work that is directly related to activities of the vendor that are described in a qualification certificate issued, for the purposes of this division, to the vendor for the year in respect of a recognized business;
(c) C is the aggregate of all amounts each of which is the salary or wages of an employee who reports for work at an establishment of the vendor situated in Québec, paid by the vendor in respect of a pay period, within the vendor’s base period, throughout which the employee spends, when at work, at least 75% of the time in undertaking, supervising or supporting, in an establishment of the vendor situated in Québec or elsewhere, but in connection with the mandates attributable to such an establishment, work that is directly related to activities of the vendor that are described in a qualification certificate issued, for the purposes of this division, to the particular corporation for the year in respect of a recognized business, except if an amount is included, in respect of the employee, in relation to the vendor, in computing an amount determined under this subparagraph, in relation to another corporation that carries on a recognized business; and
(d) D is the proportion that the number of the vendor’s employees referred to in any of subparagraphs a to c, as the case may be, who were assigned to the carrying on of part of the activities that diminished or ceased at the particular time is of the number of the vendor’s employees assigned to those activities immediately before the particular time.