The following standards have been established for a raw material used to make product 084: Standard quantity of the material per unit of output Standard price of the material The following data pertain to a recent month's operations: Actual material purchased Actual cost of material purchased Actual material used in production Actual output 7.9 meters $ 19.00 per meter 4,200 meters $ 84,420 3,900 meters 580 units of product 084 The direct materials purchases variance is computed when the materials are purchased. Required: a. What is the materials price variance for the month? b. What is the materials quantity variance for the month? (Indicate 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.) a. Materials price variance b. Materials quantity variance