Grady Home Health has a profit margin of 15 percent on sales of $20,000,000. If the firm has debt of $7,500,000 and total assets of $22,500,000, what is Grady's return on assets (ROA)?

A	13.3 percent

B	10.9 percent

C	8.0 percent

D	5.3 percent

E	3.1 percent