Deighan Company has the following income statement: $25,000 Sales revenue (1,250 units) Cost of goods sold-fixed Cost of goods sold-variable Operating expenses-fixed 3,000 17,000 1,000 Operating expenses-variable Net income 2.000 $2.000 How much is Deighan's contribution margin? (2 marks) b) What would be the contribution margin if selling price is increased by 10% and variable operating expenses increase by 5%? (2 marks)