In the formula in the first paragraph,(a) A is the total cost of emission allowances eitheri. used by the taxpayer to settle the particular emission obligation in the year, or
ii. held by the taxpayer at the end of the year that can be used to satisfy the particular emission obligation in respect of the year;
(b) B is the amount determined by the formula
D − (E + F); and
(c) C is the fair market value of an emission allowance at the end of the year that could be used to satisfy the particular emission obligation in respect of the year.
In the formula in subparagraph b of the second paragraph,(a) D is the number of emission allowances required to satisfy the particular emission obligation in respect of the year;
(b) E is the number of emission allowances used by the taxpayer to settle the particular emission obligation in the year; and
(c) F is the number of emission allowances held by the taxpayer at the end of the year that can be used to satisfy the particular emission obligation in respect of the year.