Lake Cellars produces and sells white wine. The following data concern the three varietals of white wine the company currently offers. Sales data for August are given below. Sauvignon Blanc Chardonnay Riesling Total Budgeted selling price $ 9.30 S 10.30 $ 7.20 Budgeted variable cost S 6.30 $ 7.70 $ 5.20 Budgeted selling quantity 20.400 7,900 12,300 40.600 Actual selling price 9.25 s 9.70 S 7.35 Actual variable cost $ 6.10 S 7.85 $ 4.85 Actual selling quantity 22.400 8.100 12.200 42,700 Required: a. Compute the sales price variance for all three wines. (Indicate the effect of each variance by selecting "F"for favorable, or "U" for unfavorable. If there is no effect, do not select either option.) Price Variance Sauvignon Blanc Chardonnay Riesling Variety Total variance b. Compute the activity variance for Lake Cellars for August. (Do not round intermediate calculations. Indicate the effect of each variance by selecting "F" for favorable, or "U" for unfavorable. If there is no effect, do not select either option.) Activity variance C. Compute the mix and quantity variances for Lake Cellars for August. (Do not round intermediate calculations. Indicate the effect of each variance by selecting "F" for favorable, or "U" for unfavorable. If there is no effect, do not select either option.) Mox variance Quantity variance