The following shows selected comparative statement data for Dell Corporation. All financial data are as of January 31 in millions. 2009 2008 Total revenue Cost of revenue Net income Account receivables Inventory Current assets Long-term liabilities Total assets Total common shareholders' equity $61,101 $50,144 $2,178 $4,731 $867 $20.151 $7,370 $26,500 $1.271 $61,133 $19,462 $2,947 $7,693 $1,180 $19.880 $5,206 $27,561 $3,735 What is the return on asset for 2009? 8.17% O 10.7% None of these 9.17%