Short Answer: ll work should be performed in EXCEL. These questions are similar to the homework. Please show all work, you earn answer and for the answer itself. Even if your ultimate answer is incorrect, by showing your work, 44. Deighan Company had the following income statement: Sales revenue (800 units) Cost of goods sold -fixed Cost of goods sold-variable Operating expenses ; fixed Operating expenses - variable Net income How much is Deighan's contribution margin? $80,000 20,000 18,500 12,000 13,500 $16,000