18. Charlotte Company prepared this income statement based on a sales volume of 1,000 units. (The relevant range of production is 800 units to 1,400 units.)

Sales $80,000

Variable expenses $41,600

Contribution margin $38,400

Fixed expenses $24,000

Net operating income $14,400

What is the degree of operating leverage?

Group of answer choices

2.67

1.88

2.29

2.45