15- (2 points) Given the following information, what is the degree of operating leverage? Price - $40 per unit; variable cost - $20 per unit; fixed costs - $45,000 per year; depreciation - $30,000 per year, sales - 12,500 units per year. The tax rate is 34%. A) 2.2 B) 1.5 C) 1.3 D) 1.9 E) 2.4