Standard labon hours per unit of output 4,4 hours standard Jabon rate 5.17 .70 per hour The following data pertain to operations concerning the product for the fast month: Required: a. What is the labor rate variance for the month? b. What is the labor efficiency voriance for the month? (lndicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance). Input all amounts as positive values.)