Alibaba Group Holding Limited reported the following income statement for the year ended March 31, 2023:

Item	Amount (in millions)
Revenue	$119,646
Cost of Revenue	$68,234
Gross Profit	$51,412
Operating Expenses	$27,816
Operating Income	$23,596
Interest Expense	$872
Income Before Taxes	$22,724
Income Tax Expense	$5,891
Net Income	$16,833

a. Compute Alibaba Group Holding Limited's gross profit margin. b. Determine the operating income margin for Alibaba Group Holding Limited. c. Discuss the impact of Alibaba Group Holding Limited's interest expense on its profitability. d. Analyze the effective tax rate of Alibaba Group Holding Limited and its implications for global operations.