Roak Company and Clay Company are similar firms that operate in the same industry. Clay began operations 2 years ago and Roak started 5 years ago. In the current year, both companies pay 7% interest on their debt to creditors. The following additional information is available. Roak Company Clay Company Current Yr 1 Yr Ago 2 Yrs Ago Current Yr 1 Yr Ago 2 Yrs Ago Total asset turnover 4.6 4.3 4.5 3.0 3.0 2.6 Return on total assets 9.0% 12.6% 13.2% 5.9% 5.6% 5.3% Profit margin ratio 3.9% 4.0% 3.8% 5.8% 6.0% 5.9% Sales $485,000 $455,000 $471,000 $285,000 $245,000 $185,000 1. (a) Which company has the better profit margin