Analyze and compare Amazon.com, Best Buy, and Wal-Mart The condensed income statements through operating income for Amazon.com, Inc. (AMZN), Best Buy Co., Inc. (BBY), and Wal-Mart Stores, Inc. (WMT), for a recent fiscal year follow (in millions): Sales Cost of sales Gross profit Selling, general, and administrative expenses Operating expenses Operating income Amazon Best Buy Wal-Mart $135,987 $ 39,403 $485,873 (88,265) (29,963) (361,256) $ 47,722 $9,440 $124,617 (43,369) (167) (7,547) (39) (101,853) 0 $ 4,186 $ 1,854 $22,764 1. Prepare comparative common-sized income statements for each company, Round percentages to one decimal place. If percentages is zero, enter "0". For those boxes in which you must enter subtracted or negative numbers use a minus sign. Comparative Income statements Amazon Best Buy Wal-Mart Sales % % % Cost of sales % % % Gross profit % % % Selling, general, and administrative expenses % % % % % % Operating expenses Operating income % % %