Robinwood Fixtures manufactures two products, K4 and X7. The company prepares its master budget on the basis of standard costs. The following data are for September: K4 X7 Standards Direct materials pounds at 0.75 $9.40 per pound pound at 1 $10.00 per pound hours at hours at $30 Direct labor 1.25 $27.40 per hour 1.50 per hour Variable overhead (per direct labor- $ 22.60 $ 24.40 hour) Fixed overhead (per $ $ month) 418,080 Expected activity 17,420 494,970 23,570 (direct labor-hours) Actual results Direct material (purchased and used) pounds at 11,000 $8.80 per pounds at 14,270 $10.30 per pound hours at pound hours at Direct labor 14,870 $27.70 per hour 22,370 $34.00 per hour $ $ Variable overhead 359,060 471,212 $ $ Fixed overhead 393,740 491,960 Units produced (actual) 12,340 units 14,570 units Required: a. Prepare a variance analysis for each variable cost for each product. b. Prepare a fixed overhead variance analysis for each product. Note: For all requirements, 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.