The following standards for variable manufacturing overhead have been established for a company that makes only on Standard hours per unit of output Standard variable overhead rate 1.2 hours $19.80 per hour The following data pertain to operations for the last month Actual hours Actual total variable manufacturing overhead cost Actual output 2,100 hours $40,740 1,600 units What is the variable overhead rate variance for the month? Multiple Choice $2.724 U 5840 F $3,492 U Multiple Choice $2,724 U O $840 F $3,492 U $768 U