Selected account information (in $ millions) from Target Corporations 2011 annual report follows. While the company has authorized the issuance of 5 million shares of preferred stock, none have been issued. 2011 2010 Net income $2,929 $2,920 Total assets $46,630 $43,705 Total common shareholders equity $15,821 $15,487 Collapse question part (a) Calculate Target Corporations return on assets for 2011. B) Calculate Return on common stockholders equity