Calculate the External Finance Needed (EFN) for Colvan Corporation that had the following financial information for 2020. Sales projection for 2021 is $4,800. Costs, Short Term Debt and Assets vary with sales. Long term debt does not vary with sales. Dividend payments are 30%. (5 marks) Sales $4,200 Assets $4,600 Net Income $ 600 Short Term Debt $ 692 Costs $3,600 Long Term Debt $ 840 Equity $3,068