Required Compute variances for the following items and indicate whether each variance is favorable (F) or unfavorable (U): Note: Select "None" if there is no effect (i.e., zero variance). Item Sales price Sales revenue Cost of goods sold Material purchases at 5,000 pounds Materials usage Production volume Wages at 4,000 hours Labor usage at $16 per hour Research and development expense Selling and administrative expenses Budget Actual Variance Effect $ 658 $ 529 $ 584,000 $ 608,000 $ 391,000 $ 364,000 $ SA 279,000 $ 286,000 $ 186,000 $ 182,000 990 units 920 units units $ 60,800 $ 59,100 $ 96,400 $ 97,800 $ 26,000 $ 31,000 GA 55,000 $ 44,000