The Standard Factory Overhead Rate Is $10 Per Direct Labor

Multiple Choice

The standard factory overhead rate is $10 per direct labor hour ($8 for variable factory overhead and $2 for fixed factory overhead) based on 100% of normal capacity of 30,000 direct labor hours. The standard cost and the actual cost of factory overhead for the production of 5,000 units during May were as follows: ​
-The variable factory overhead controllable variance is

A) $10,000 favorable
B) $2,500 unfavorable
C) $10,000 unfavorable
D) $2,500 favorable