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	$605,000	$593,200
Total investments	67,300	45,400
Total property, plant, and equipment	902,700	637,200
Total current liabilities	112,900	80,300
Total long-term liabilities	300,400	245,700
Preferred 9% stock, $100 par	84,800	84,800
Common stock, $10 par	516,200	516,200
Paid-in capital in excess of par-common stock	67,600	67,600
Retained earnings	493,100	281,200

Using the balance sheets for Kellman Company, if net income is $112,200 and interest expense is $36,000 for Year 2, what is the return on stockholders' equity for Year 2 (round percent to two decimal points)?

a. 10.63%

b. 12.97%

c. 10.42%

d. 11.56%