Valuable Electronics uses a standard part in the manufacture of different types of radios. The total cost of producing 29,000 parts is $105,000, which includes fixed costs of $50,000 and variable costs of $55,000. The company can buy the part from an outside supplier for $2 per unit and avoid 30% of the fixed costs. Assume that the company can use the freed manufacturing space to make another product that can earn a profit of $16,000. If Valuable outsources, what will be the effect on operating income? A. increase of $28,000 decrease of $28,000 c. ecrease of $15,000 D. increase of $16,000