Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero (ariance). Input all amounts as positive values.) The company has reported the following actual results for the product for April 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