The Balance Sheets at the End of Each of the First

The balance sheets at the end of each of the first two years of operations indicate the following: $\begin{array}{|l|l|l|}\hline2012&2013\\\hline\$ 560,000 & \$ 600,000 & \text { Total current assets } \\\hline 40,000 & 60,000 & \text { Total investments } \\\hline 700,000 & 900,000 & \text { Total property, plant, and ecuipment } \\\hline 80,000 & 125,000 & \text { Total current liabilities } \\\hline 250,000 & 350,000 & \text { Total long-term liabilities } \\\hline 100,000 & 100,000 & \text { Preferred } 9 \% \text { stock } \$ 100 \mathrm{prr} \\\hline 600,000 & 600,000 & \text { Common stock, } \$ 10 \text { prr } \\\hline 60,000 & 60,000 & \text { Paid-in capital in excess of par--common stock } \\\hline 210,000 & 325,000 & \text { Retained earnings }\\\hline\end{array}$
Based on the above information, if net income is $130,000 and interest expense is $40,000 for 2013, what is the rate earned on stockholders' equity for 2013 (round to one decimal place) ?

A) 12.0%
B) 12.7%
C) 13.2%
D) 16.5%