Final answer:
The cost of goods manufactured in December is $92,000.
Step-by-step explanation:
The cost of goods manufactured in December is calculated by adding the direct materials, direct labor, and manufacturing overhead and subtracting the change in work-in-process inventory.
Using the given information:
Direct materials: $36,000
Direct labor: $20,000
Manufacturing overhead: $38,000
Beginning work-in-process inventory: $23,000
Ending work-in-process inventory: $25,000
Cost of goods manufactured = Direct materials + Direct labor + Manufacturing overhead + Beginning work-in-process inventory - Ending work-in-process inventory = $36,000 + $20,000 + $38,000 + $23,000 - $25,000 = $92,000
Therefore, the cost of goods manufactured in December is $92,000 (option a).