Marigold Design Works generated $560,680 in operating income on sales revenue of $2,803,400. The company had $2,370,000 in assets on January 1 and $2,870,000 in assets on December 31. (a-b) (a) Calculate Marigold's margin. (Round answer to O decimal places, e.g. 65%.) Marigold's margin % (b) Calculate Marigold's asset turnover. (Round answer to 2 decimal places, e.g. 0.65.) Marigold's asset turnover times (c) Calculate Marigold's return on investment. (Round answer to 2 decimal places, e.g. 5.12%.) Marigold's return on investment %