The 20x9 balance sheet of E. I. du Pont de Nemours and Company shows average DuPont shareholders' equity attributable to controlling interest of $9,996 million, net operating profit after tax of $2,308 million, net income attributable to DuPont of $2,513 million, and common shares issued of 950.044 million. Assume the company has no preferred shares issued. DuPont's return on equity (ROE) for the year is: A 30.7% B. 37.6% C.25.1% D.36.4% E. There is not enough information to calculate the ratio