The following costs result from the production and sale of 4,550 drum sets manufactured by Tight Drums Company for the year ended December 31, 2019. The drum sets sell for $305 each. The company has a 40% income tax rate. $127,400 423, 150 168, 350 118,300 Variable production costs Plastic for casing Wages of assembly workers Drum stands Variable selling costs Sales commissions Fixed manufacturing costs Taxes on factory Factory maintenance Factory machinery depreciation Fixed selling and administrative costs Lease of equipment for sales staff Accounting staff salaries Administrative management salaries 9.500 19,000 79,000 19,000 69,000 149,000 Required: 1. Prepare a contribution margin income statement for the year. 2. Compute its contribution margin per unit and its contribution margin ratio. 3. For each dollar of sales, how much is left to cover fixed costs and contribute to operating income