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:

Standard:	25,000 hours at $10	$250,000
Actual:	Variable factory overhead	$202,500
	Fixed factory overhead	60,000

The fixed factory overhead volume variance is

a. $12,500 unfavorable

b. $12,500 favorable

c. $10,000 unfavorable

d. $10,000 favorable