REAL WORLD years are as follows (in millions); Amazon.com, Inc. Operating Income Statements For the Years Ended December 31 in millions) 2 Year1 $60,903 $70,080 Product sales.. 18.908 13.549 88.988 $74452 $62,752 10,766 Service sales Total sales $54,181 4332 858 3,133 6565 Fulfillment. Marketing Technology and content. General and administrative.... Other operating expense (incomel, net Total operating expenses. 4,332 9,275 ,129 1,552 114 133 $88810 $73,707 A. Prepare a vertical analysis of the two operating income statements. (Round percentages to one decimal place.) Use the vertical analysis to explain the decrease in income from operations. B