Krogen Grocers 2016 balance sheet shows average stockholders equity of $12,000 million, net operating profit after tax of $1,140million, net income of $380 million, and common shares issued of $1,916 million.

The company has no preferred shares issued. Krogen Grocers return on common stockholders equity for the year is:

A) 15.97%

B) 3.17%

C) 6.33%

D) 9.50%