The year-end income statement for Wickstead Corporation is presented below: Wickstead Corporation Income Statement For the Year Ended December 31, 2021 Sales (5,000 units) $350,000 Cost of Goods Sold Labor $85,000 Material $150,000 Fixed Overhead $20,000 $255,000 Gross Profit $95,000 Administrative Expense Fixed $15,100 Variable $10,000 $25, 100 Operating Income $69,900 a) Calculate the Contribution Margin and Operating Income for the year. . (2 marks) b) Calculate the contribution margin ratio. . (2 marks) c) Calculate the break-even sales and break-even units. . (2 marks) d) Suppose the company would like to generate an operating profit of $90,900. Determine the revenue that is needed to obtain this target and calculate the number of d) Suppose the company would like to generate an operating profit of $90,900. Determine the revenue that is needed to obtain this target and calculate the number of units that need to be produced to meet this goal. . (2 marks) e) Given the company's current yearly sales amount is $455,000, what is the margin of safety in dollars and in units? (2 marks)