Aircraft Products, a manufacturer of aircraft landing gear, makes 1,000 units each year of a special valve used in assembling one of its products. The unit cost of 2 6 producing this valve includes variable costs of $70 and fixed costs of $60. The valves could be purchased from an outside supplier at $77 each. If the valve were purchased from the outside supplier, 40% of the total fixed costs incurred in producing this valve could be eliminated. Buying the valves from the outside supplier instead of making them would cause the company's operating income to: l: 2 01:41:59 :l Multiple Choice 0 Decrease by $29000. O Decrease by $9.000. 0 increase by $'l7.000. 0 increase by $25,000