Question 6 (Mandatory) (9 points) Saved The standard factory overhead rate is $7 per machine hour ($5 for variable factory overhead and $2 for fixed factory overhead) based on 100% capacity of 22,000 machine hours. The standard cost and the actual cost of factory overhead for the production of 1,000 units were as follows: Standard: 17,500 hours @ $7 $122, 500 Actual: Variable factory overhead 106,830 Fixed Factory overhead 44,000 Determine the (a) volume variance, (b) controllable variance, and (c) total factory overhead cost variance. halo warianca