The following standards for variable manufacturing overhead have been established for a company that makes only one product: Standard hours per unit of output Standard variable overhead rate 9.0 hours $ 15.40 per hour The following data pertain to operations for the last month: Actual hours 2,975 hours Actual total variable manufacturing overhead cost $ 46,595 Actual output 250 units What is the variable overhead efficiency variance for the month? Multiple Choice $11,165 U $11,945 U $34,650 F $780 U