1. In which year the sales department had the best performance related to its returns and allowances policy?
2. In which year the purchasing department had the worst performance related to its returns and allowances policy?
3. In which year the sales department granted the highest sales discount?
4. In which year the purchasing department had the best coordination with the financial department in relation to purchase discount?
5. In which year the company had the worst operating performance of profitability?

explain and answer the required step by step

Consider the following summaries of the financial statements related to Sage Inc, for the years 2019, 2018, and 2017. 2019 2018 2017 90000 65846 56264 60000 29452 19645 Balance Sheet Current assets Non-current assets Current liabilities Long-term liabilities Common stock capital Retained earnings 50000 27461 20432 50000 21902 17610 6000 5760 5504 44000 40175 32363 2019 2018 2017 275600 194000 164700 132864 97879 73806 50000 35000 20000 19000 18000 17000 Income Statement Gross sales Gross purchases Sales returns & allowances Purchase returns & allowances Sales discount Purchase discount Freight-out Freight-in Beginning inventory Ending inventory 10000 6000 4000 5500 5000 4500 15000 15000 15000 21000 17000 14000 zero zero zero zero zero zero zero zero zero Ending inventory Selling expenses Administrative expenses 37119 27539 25924 29874 21776 21914 2017 2018 (3767) 5629 9919 2079 Statement of Cash Flows 2019 Net cash from operating activities 10024 Cash inflows from financing 5856 activities Cash inflows from investing 295 activities Cash outflows for financing activities 3128 Cash outflows for investing activities 14100 zero zero 3455 1968 4773 3982 r Required 1: Apply the vertical analysis tool on the above summaries of financial statements to answer the following questions