Please help with this

Please leave column A blank as I would like to use that for marking purposes. Cheap Shades Inc. is a retail business that sells a single product (knockoff sunglasses). The company's 0 revenues and expenses for the last 3 years are given below: Cheap Shades Inc. Comparative Income Statement 2020 2021 2022 Sales in units 208,300 229,130 263,500 Sales revenue $ 8,748,600 $ 9,623,460 $ 11,067,000 Less cost of goods sold $ 4,374,300 $ 4,811,730 $ 5,533,500 Gross margin 4,374,300 4,811,730 5,533,500 Less operating expenses: Shipping expense 962,346 962,346 962,346 Advertising expense 874,860 962,346 1,106,700 Salaries and commissions 143,000 161,750 180,500 Insurance expense 9,000 9,000 9,000 Depreciation expense 42,000 42,000 42,000 Total operating expenses 2,031,206 2,137,442 2,300,546 Operating Income $ 2,343,094 $ 2,674,288 $ 3,232,954 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) Expense Description Type Cost of goods sold Variable Shipping expense Variable Advertising expense Fixed Salaries and commissions Mixed Insurance expense Fixed Depreciation expense Fixed b. For those expenses listed above that you identified as mixed, separate each mixed expense into its variable and fixed components using the high-low method and state the cost formula for each mixed Cost Activity High 180500 Low 143000 Change 37500 C. Assume that for 2023 sales are projected to be 527,000 units Create a contribution margin income statement for 2023 assuming cost behaviour identified in a. and b. will not change in 2023. (3.5 marks)