8. The following is Addison Corporation's contribution format income statement for last month: Sales $1,281,000 Variable expenses 858,270 Contribution margin 422,730 Fixed expenses 162,000 Net operating income $ 260,730 The company has no beginning or ending inventories. A total of 21,000 units were produced and sold last month. What is the company's contribution margin ratio?

A. 43%

B. 26%

C. 33%

D. 41%