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Security Technology Inc. (STI) is a manufacturer of an electronic control system used in the manufacture of certain special-duty auto transmissions used primarily for police and military applications. The part sells for $43 per unit and had sales of 24,700 units in the current year, 2018. STI has no inventory on hand at the beginning of 2018 and is projecting sales of 28,100 units in 2019. STI is planning the same production level for 2019 as in 2018, 26,400 units. The variable manufacturing costs for STI are $14, and the variable selling costs are only $0.50 per unit. The fixed manufacturing costs are $211,200 per year, and the fixed selling costs are $640 per year. 0.31 points eBook Required: 1. Prepare an income statement for each year using full costing. 2. Prepare an income statement for each year using variable costing. 3. Prepare a reconciliation of the difference each year in the operating income resulting from the full and variable costing methods. References Complete this question by entering your answers in the tabs below. Required 1 Required 2 Required 3 Prepare an income statement for each year using full costing. (Round your final answers to nearest whole dollar amount.)