Last year Harrington Inc. had sales of $325,000 and a net income of $19,000, and its year-end assets were $250,000. The firm's total-debt-to-total-assets ratio was 67.5%. Based on the DuPont equation, what was the ROE?
a. 21.98%
b. 18.94%
c. 23.38%
d. 22.68%
e. 22.22%