8. griffin corporation uses a standard costing system. information for the month of may is as follows: direct labor: actual hours worked 12,000 hrs. standard hours allowed for actual production 10,000 hrs. average actual labor cost per hour $18.00 the factory overhead rate is based on a normal volume of 12,000 direct labor hours. standard cost data at 12,000 direct labor hours were as follows: variable factory overhead $48,000 fixed factory overhead 24,000 total factory overhead $72,000 what is the variable overhead efficiency variance for griffen? a. $2,000 u b. $8,000 u c. $4,000 u d. $20,000 u
