A Firm with Sales of $1,000,000,net Profits After Taxes of $30,000,total

A firm with sales of $1,000,000,net profits after taxes of $30,000,total assets of $1,500,000,and common stockholders' investment of $750,000 has a return on equity of ________.

A) 2 percent
B) 15 percent
C) 3 percent
D) 4 percent