In the formulas in the first paragraph,(a) A is the amount included under section 851.22.22.1 in computing the taxpayer’s income for the taxpayer’s transition year;
(b) B is the aggregate of all amounts each of which is an amount deducted under section 851.22.22.3 in computing the income of the taxpayer for a taxation year that began before that time;
(c) C is the amount deducted under section 851.22.22.2 in computing the taxpayer’s income for the taxpayer’s transition year; and
(d) D is the aggregate of all amounts each of which is an amount included under section 851.22.22.4 in computing the taxpayer’s income for a taxation year that began before that time.