The balance sheets at the end of each of the first two years of operations indicate the following: Kellman Company Year 2 Year 1 Total current assets $619,100 $560,800 Total investments 65,300 54,000 Total property, plant, and equipment 917,900 763,900 Total current liabilities 109,900 82,800 Total long-term liabilities 297,600 226,600 Preferred 9% stock, $100 par 87,200 87,200 Common stock, $10 par 535,500 535,500 Paid-in capital in excess of par-common stock 69,700 69,700 Retained earnings 502,400 376,900 Using the balance sheets for Kellman Company, if net income is $101,400 and interest expense is $45,800 for Year 2, what is the return on stockholders' equity for Year 2 (round percent to two decimal points)? Oa. 10.32% Ob. 8.96% Oc. 9.15% d. 9.70%