Horizon company has $25 per unit selling price, 58,00 per unit in variable production cost and S1.00 per unit in variable selling and administrative cost. The annual fixed production cost is $400,000. The annual fixed selling and administrative cost is $50,000. Required: a. Complete the table below for each year. Assume a FIFO flow, 2018 2019 2017 120,000 110,000 150.000 120,000 100,000 140,000 2020 100,000 100,000 Units Produced Units Sold Manufacturing cost per unit under full absorption costing Operating income under variable costing Operating income under full absorption costing Ending inventory using variable costing (5) Ending inventory using full absorption costing (5) b. Explain how and your results in requirement a above differed with respect to operating income between Variable costing and full absorption costing