Required Compute variances for the following items and indicate whether each varlance is favorable (F) or unfavorable (U): (Select "None" If there is no effect (.e., zero variance).) V ariance Effect 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 $ 658 $ 529 $ 584,000 $ 608,000 $ 391,000 S 364,000 $ 279,000 $ 286,000 $ 186,000 $ 182,000 990 units 920 units $ 60.800 $ 59,100 $ 96,400 $ 97,800 $ 26,000 $ 31,000 | $ 55,000 | $ 44,000