Answer:
C. manufacturing overhead costs incurred were less than manufacturing overhead costs charged to production.
Explanation:
Overhead are applied to the production on a predetermined overhead rate. At the end of the period or project we compare the net impact of applied overheads and actual overhead of a project and determine any under or over application of overheads to adjust the difference.
Over-applied overheads mean the overhead applied to the production using predetermined overhead rate is more than the overheads actually incurred.