QUESTION 1 The following standards for variable manufacturing overhead have been established for a company that makes only one product: Standard hours per unit of output 1.6 hours Standard variable overhead rate $ 11.55 per hour The following data pertain to operations for the last month: Actual hours 4,900 hours Actual total variable manufacturing overhead cost $58,310 Actual output 3,000 units What is the variable overhead efficiency variance for the month? O $1,680 F O $1, 155 U $1, 190 F O $1,190 U