Amazon.com, Inc. disclosed the following income statement figures for the year ended December 31, 2023:

Item	Amount (in millions)
Net Sales	$469,814
Cost of Sales	$310,263
Gross Profit	$159,551
Operating Expenses	$133,434
Operating Income	$26,117
Interest Expense	$1,677
Income Before Taxes	$27,832
Income Tax Expense	$7,689
Net Income	$20,143

a. Compute Amazon.com, Inc.'s gross profit margin. b. Determine the operating income margin for Amazon.com, Inc. c. Discuss the impact of Amazon.com, Inc.'s operating expenses on its profitability. d. Analyze the net income trend of Amazon.com, Inc. over the past three fiscal years.