36. Roberts Company uses a standard costing system. The following information pertains to direct materials for the month of July:Standard price per lb. $18.00Actual purchase price per lb. $16.50Quantity purchased 3,100 lbs.Quantity used 2,950 lbs.Standard quantity allowed for actual output 3,000 lbs.Actual output 1,000 units Roberts Company reports its material price variances at the time of purchase. What is the journal entry to record material purchases? a. Materials 55,800Accounts Payable 55,800b. Accounts Payable 55,800Materials 55,800c. Materials 55,800Materials Price Variance 4,650Accounts Payable 51,150d. Materials 51,150Materials Price Variance 4,650 Accounts Pavable 55.800