Last year Vaughn Corp. had sales of $315,000 and a net income of $17,832, and its year-end assets were $210,000. The firm's total-debt-to-total-assets ratio was 42.5%. Based on the DuPont equation, what was Vaughn's ROE?

Select the correct answer.

a. 14.11%

b. 14.44%

c. 15.10%

d. 14.77%

e. 15.43%