Required: a. Compute the materials price variance for April. b. Compute the materials quantity variance for April. c. Compute the labor rate variance for April. d. Compute the labor efficiency variance for April. e. Compute the variable overhead rate variance for April. f. Compute the variable overhead efficiency variance for April. (Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no elf variance). Input all amounts as positive values.) Roquired: a. Compute the materiak price varkarice for Aprll b. Computet the miteriais quantity variance for A pril c. Compute the labor rate varimine for April d. Compute the labor efficiency variance for April. C. Compute the variable overhead rate variance for April. 1. Compute the variable overhead efficiency variance for April (indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no variance). Input all amounts as positive values.)