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? division a division b