Mickley Corporation produces two products, Alpha6s and Zeta7s, which pass through two operations, Sintering and Finishing. Each of the products uses two raw materials, X442 and Y661. The company uses a standard cost system, with the following standards for each product (on a per unit basis): Information relating to materials purchased and materials used in production during May follows: The following additional information is available: a. The company recognizes price variances when materials are purchased. b. The standard labor rate is $21.00 per hour in Sintering and $19.50 per hour in Finishing. c. During May, 1,250 direct labor-hours were worked in Sintering at a total labor cost of $28,750, and 2,900 direct labor-hours were worked in Finishing at a total labor cost of $62,350. d. Production during May was 2,000 Alpha6s and 2,250 Zeta7s. 3. Compute the labor rate and efficiency variances for each operation. (Input all amounts as positive values. Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e, zero variance).)