The following information summarizes the standard cost for producing one metal tennis racket frame at Spaulding Industries. In addition, the variances for one month's production are given. Assume that all inventory accounts have zero balances at the beginning of the month Monthly Costs Standard Cost Per Unit $ 4.00 6.00 $3.00 14,400 Materials Direct Labor 2 h Factory Overhead: Variable Fixed 1.60 5.50 17.10 3,840 13,200 $ 41,040 Variances: Material price Material quantity Labor rate Labor efficiency 318.50 unfavorable 300.00 unfavorable 720.00 favorable 3,120.00 unfavorable What was the actual quantity of materials used during the month? 2,455 2,375. 2,475 2,300