Answer:
B. $12,000
Explanation:
The computation of the fixed manufacturing cost is shown below:
= Number of units × Fixed manufacturing overhead per unit
= 4,000 units × $3
= $12,000
The fixed manufacturing cost for the 5,000 units would remain the same as fixed costs do not change with the production level, it remains fixed.
The remaining item is not relevant. Hence, it is ignored.