Compute the missing amounts in the separate (partial) income statements A, B, and C. Answer is complete but not entirely correct. A B C Sales $ 70,000 $ 52,000 $ 122,000 Sales discounts 3,100 820 5,200 Sales returns and allowances 7,200 3,000 10,200 Net sales 51,000 21,300 72,300 Cost of goods sold 52,800 17,200 70,000 Gross profit 16,200 12,800 29,000