At a sales volume of 30,000 units, Carne Company's total fixed costs are $30,000 and total variable costs are $45,000. The relevant range is 20,000 to 40,000 units. If Carne Company were to sell 32,000 units, the total expected cost would be:
(A) $75,000
(B) $78,000
(C) $80,000
(D) $77,000