Assume the Hiking Shoes division of the Simply Shoes Company had the following results last year (in thousands). Management's target rate of return is 20% and the weighted average cost of capital is 25%. Its effective tax rate is 40%. Sales $11,000,000 Operating income 1,100,000 Total assets 1,500,000 Current liabilities 790,000 What is the division's sales margin? a. 73.33% b. 52.67% c. 10% d. 733.33%