Marvel Parts, Incorporated, manufactures auto accessories. One of the company's products is a set of seat covers that can be adjusted to fit nearly any small car. The company has a standard cost system in use for oll of its products. According to the standards that have been set for the seat covers, the factory should work 1,010 hours each month to produce 2,020 sets of covers. The staridard costs associated with this level of production are: During August, the foctory worked only 1,080 direct lobor-hours and produced 2.700 sets of covers. The following octual costs were recorded during the month: At standard, each set of covers should require 2.0 yards of material. All of the materlals purchased during the month were used in production. At standard, each set of covers should require 2.0 yards of material. All of the materials purchosed during the month were used in production. Required: 1. Compute the materials price and quantity variances for August. 2. Compute the labor rate and efficiency variances for August. 3. Compute the variable overhead rate and efficiency variances for August. (Do not round intermediate calculations. Indicate the effect of each variance by selecting " F " for favorable, "U" for unfavorable, and "None" for no effect (Le., zero variance), Input all amounts as positive values.)