Required: - Given the data below: A: Calculate the percentage increase/decrease in all line items on the income statement from 2016-2020 in column J B: Calculate the vertical analysis for all line items on the income statement for 2016 \& 2020 in columns L \& M C: Calculate the gross margin % for all years at line 38 D: Calculate the return on sales (=net profit margin) % for all years at line 40 E: Using only the data below and your supporting calculations, provide a brief analysis (4-5 sentences) summarizing your conclusion as to the components below that contributed to the success of amazon over the 5 year period. Include in your analysis your own hypothesis on why they have not paid any dividends during this 5 year period. Amazon Income Statement f or the five-vear neriod 2016 to 2020