Trey's Trucks uses a standard part in the manufacture of several of its trucks. The cost of producing 80,000 parts is $140,000, which includes fixed costs of $50,000 and variable costs of $90,000. The company can buy the part from an outside supplier for $3.10 per unit and avoid 30% of the fixed costs. If the company makes the part, how much will its operating income be? O A. $143,000 less than if the company bought the part O B. $213,000 less than if the company bought the part OC: $143,000 greater than if the company bought the part D. $213,000 greater than if the company bought the part