Riverside Manufacturing designs and manufactures bathtubs for home and commercial applications. Riverside recorded the following data for its commercial bathtub production line during the month of March Standard DL hours per tub 5 Standard variable overhead rate per DL hour $6.00 Standard variable overhead cost per unit $30.00 Actual variable overhead costs $21,375 Actual DL hours 2,850 Actual variable overhead cost per DL hour $7.50 Actual tubs produced 1,500 What is the variable manufacturing overhead efficiency variance in March? A. $4,275 favorable OB. $27,900 favorable OC. $4,275 unfavorable OD. $27,900 unfavorable View instructor tip # 70 1 2 2 3% Q W A 3 43 # 80 F3 E 30 $ 54 4 C 000 600 4 " % 85 Time Remaining: 02:06:39 Next MacBook Pro 00 DI " 19 8: < 6 97 ( 7 8 9 R T Y U 1