Low Carb Diet Supplement, Inc., has two divisions. Division A has a profit of $100,000 on sales of $2,000,000. Division B is only able to make $25,000 on sales of $300,000. (a) Compute the profit margins (return on sales) for each division. (Round your answers to 2 decimal places. Omit the "%" sign in your response.) (b) Based on the profit margins (returns on sales), which division is superior?