Answer:
Option (a) is correct.
Explanation:
At production level of 10,000 units,
Total cost = $180,000
Variable costs = $64,000
Fixed cost = Total cost - Variable cost
= $180,000 - $64,000
= $116,000
Therefore,
Variable cost per unit = Variable cost ÷ No. of units
= $64,000 ÷ 10,000
= $6.4
Therefore, at the production level of 13,000 units,
Total costs:
= Fixed cost + Variable cost
= $116,000 + ($6.4 × 13,000)
= $116,000 + $83,200
= $199,200