A partial planning budget and actual results from Market Works Corp. are given below: Planning u= 1,200 units h = 800 hours Actual u = 1,250 units h = 820 hours Sales ($500) Wages ($12h) Supplies ($0.30u) Maintenance ($400 + $2h $60,000 $9,600 $360 Sales Wages Supplies $64,000 $10.200 $350 $2,000 Maintenance $2,400 What is the revenue variance for Sales? A $1,500 favorable B. $4,000 favorable C. $2,500 favorable D. $4,000 unfavorable