Marvel Parts, Incorporated, manufactures auto accessorles Including a set of seat covers that can be adjusted to fit most cars. According to Its standards, the factory should work 1,070 hours each month to produce 2,140 sets of seat covers. The standard costs assoclated with this level of production are: During August, the factory worked 1,000 direct labor-hours and produced 2,400 sets of covers. The following actual costs were recorded during the month: At standard, each set of covers should require 1.5 yards of materlal. All of the materlals purchased during the month were used in production. Requlred: 1. Compute the materlals price and quantlty varlances for August. 2. Compute the labor rate and efficlency varlances for August. 3. Compute the varlable overhead rate and efficlency varlances for August. Note: Do not round Intermedlate calculatlons. Indlcate the effect of each varlance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (l.e., zero varlance). Input all amounts as positlve values