Answer:
Income under variable=$55,000
Option D is correct ( $55,000.)
Step-by-step explanation:
Lets first calculate the total cost per unit:
Total cost per unit=

Total Cost per unit=

Total cost per unit=$25
Sales Revenue=Total cost per unit*units sold+Income using absorption costing
Sales Revenue=$25*18,000+$65,000
Sales Revenue=$515,000
Cost of goods sold= Standard variable cost per unit*units sold
Cost of goods sold=$20*18,000
Cost of goods sold=$360,000
Income under variable=Sales Revenue-Cost of goods sold-fixed manufacturing overhead
Income under variable=$515,000-$360,000-$100,000
Income under variable=$55,000
Option D is correct ( $55,000.)