Cheap Shades inc is a retail business that sells a single product (knockoff sunglasseel. The company's revenues and expenses for the last 3 years are given below: Required: a. Based on cost behaviour experienced in prior 3 years above, identify which expenses are variable, which expenses are fixed and which expenses are mixed (use the chart below). [4.5 marks) b. For those expenses listed above that you identified as mined, separate each mised expense into its variable and fixed components using the highlow method and state the cost formula for each mied eppense. (3 marks) c. Assume that for 2023 sales are projected to be 461.000 units Create a contribution margin income statement for 2023 assuming cost behaviour istertified in a. and b. will not change in 2023, (3.5 marks)