PP has prepared the following flexible budget for September and is in the process of interpreting the variances. F denotes a favorable variance and U denotes an unfavorable variance. Flexible Budget Variances Price Efficiency Material A 27 000 2000U 1 200F Material B 32 000 400F 700U Material C 46 000 1 800F 2 300U The actual amount spent for Material C was: O a. 46 500 O b. 33 100 c. 23 800 d. 45 500