Perot Company had income before interest and taxes of $120,000. Interest expense for the period was $17,000 and income taxes amounted to $28,500. The average stockholders' equity was $680,000. What is Perot's return on equity?
a. 17.65%.
b. 15.15%.
c. 13.46%.
d. 10.96%.
e. None of the above is correct.