Sunland Company had net income of $100775 and paid dividends of $39500 to common stockholders and $22500 to preferred stockholders in 2017. Sunland Company common stockholders equity at the beginning and end of 2017s was $415000 and $595000, respectively. Sunland Company return on common stockholders equity is:

20%

11%

16%

15%

(Please show how answer is achieved)