Carrier Sales Sales discounts $ 168,000 2,000 Sales returns and allowances 20,000 Cost of goods sold 96,652 Lennox $ 910,000 21,000 6,000 542,162 Trane York $ 56,000 $ 275,000 600 5,200 5,700 1,300 36,778 129,954 (a) Compute net sales, gross profit, and the gross margin ratio for each of the four separate companies. (b) Which company has the better gross margin ratio?