Kellman Company
	Year 2	Year 1
Total current assets	$614,031	$561,031
Total investments	65,913	41,973
Total property, plant, and equipment	863,933	786,774
Total current liabilities	101,404	81,163
Total long-term liabilities	319,297	226,426
Preferred 9% stock, $100 par	91,321	91,321
Common stock, $10 par	570,646	570,646
Paid-in capital in excess of par-common stock	64,639	64,639
Retained earnings	396,570	355,583

Using the balance sheets for Kellman Company, if net income is $104,461 and interest expense is $41,009 for Year 2, what is the return on total assets for the year (round percent to two decimal points)?

a.7.52%

b.9.47%

c.6.77%

d.9.92%