Greener Hoverboards uses a common part in the manufacture of several of its hoverboards. The cost of producing 44,000 parts is $142,000, which includes fixed costs of $70,000 and variable costs of $72,000. The company can buy the part from an outside supplier for $3.60 per unit, and avoid 30% of the fixed costs. If Greener Hoverboards makes the part, how much will its operating income be? O A. $65,400 less than if the company bought the part B. $91,000 less than if the company bought the part OC. $91,000 greater than if the company bought the part D. $65,400 greater than if the company bought the part