Trey's Trucks uses a standard part in the manufacture of several of its trucks. The cost of producing 60,000 parts is $170,000, which includes fxed costs of $90,000 and variable costs of $80,000. The company can buy the part from an outside supplier for $3.10 per unit and avoid 30% of the fored costs If the company makes the part, how much wil its operating income be? O A $70,000 less than it the company bought the part B. $123.000 greater than if the company bought the part OC. $123,000 less than if the company bought the part OD. $79,000 greater than if the company bought the part