Amazon.com, Inc. Operating Income Statements For the Years Ended December 31 (in millions) Year 2 Year 1 Product sales $141,915 Service sales 90,972 Total sales 32,887 $139,156 Cost of sales 34,027 $118,573 59,293 $177,866 $111,934 25,249 10,069 22,620 3,674 Fulfillment Marketing Technology and content General and administrative 13,814 28,837 4,336 296 214 Other operating expense, net Total operating expenses $220,466 Operating income $173,760 $4,106 $12,421 Required: eBook Calculator Operating Income Statements For the Years Ended December 31 (in millions) Year 2 Year 1 Amount Percent Amount 141915 110,573 90.972 59.293 Percent Product sales 100 Service sales Total sales 232.007 177266 Cost of sales Fulfillment Marketing Technology and content General and administrative Other operating expense, net Total operating expenses Operating income b. Use the vertical analysis to explain the decrease in income from operations, The vertical analysis indicates that operating income increased between the two years. Total expenses as a percent of total sales. There was a sizable in cost of sales as a percent of sales. There were also to technology and content, and general and administrative expenses as a percent of sales