Answer:
c.$27,284.90 unfavorable
Step-by-step explanation:
Standard variable overhead rate =$27.00
Standard hours allowed per completed unit =4.3
Actual production unit =971
Actual variable overhead costs =$140,018
Variable factory overhead controllable variance = (Standard variable overhead rate * Standard hours allowed per completed unit * Actual production unit) - Actual variable overhead costs
Variable factory overhead controllable variance = ($27 * 4.3 * 971) - $140,018
Variable factory overhead controllable variance = $112,733.1 - $140,018
Variable factory overhead controllable variance = $27,284.9 (Unfavorable)