Grady Home Health has a profit margin of 15 percent on sales of $20 million. If the firm has debt of $7.5 million and total assets of $22.5 million, what is Grady's return on assets?

Select one:

a. 13.3%

b. 10.9%

c. 8.0%

d. 5.3%

e. 3.1%