The following selected data were taken from the financial statements of the Berrol Group for December 31, 2012, 2011, and 2010: Dec. 31, 2012 Dec.31, 2011 Dec. 31, 2010 Total assets $3,000,000 $2,700,000 $2,400,000 Notes payable (10% interest) 1,000,000 1,000,000 1,000,000 Common stock 400,000 400,000 400,000 Preferred $6 stock, $100 par (no change during year) 200,000 200,000 200,000 Retained earnings 1,126,000 896,000 600,000 The 2012 net income was $242,000 and the 2011 net income was $308,000. No dividends on common stock were declared between 2010 and 2012. The Rate Earned on Total Assets for 2011 is: Note: No special instruction is given in this problem, so use the appropriate average needed. (round your answer to one decimal point): a) 8.2 b) 16 c) 15.1 d) 12.4