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 Amazon Best Buy Wal-Mart $135,987 $39,403 $485,873 (88,265) (29,963) (361,256) Gross profit $ 47,722 $9,440 $124,617 Selling, general, and administrative expenses (43,369) (101,853) 0 Operating expenses (7,547) (39) $1,854 $ 22,764 (167) $4,186 Operating income 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 Wal-Mart % Sales % % Cost of sales 8/ % Gross profit % Selling, general, and administrative expenses Operating expenses % Operating income % 26 % % Best Buy