660. For the purposes of sections 658 and 659, the inventory of a person shall be determined as of the beginning of 1 July 1992, and may be determined(1) on 1 July 1992;
(2) where the business of the person is not open for active business on 1 July 1992, on the first day after 1 July 1992, or the last day before 1 July 1992, on which the business is open for active business; or
(3) on a day before or after 1 July 1992 where the Minister is satisfied that the inventory system of the person is adequate to permit a reasonable determination of the person’s inventory as of 1 July 1992.