How Is the Fixed Overhead Volume Variance Calculated

How is the fixed overhead volume variance calculated?

A) The difference between the standard fixed overhead rate and the actual fixed overhead rate multiplied by the actual hours used
B) The difference between the standard fixed overhead costs allocated and the budgeted fixed overhead costs
C) The difference between the actual fixed overhead costs incurred and the budgeted fixed overhead costs
D) The difference between the actual fixed overhead costs incurred and the standard fixed overhead costs allocated