The part can be purchased from an outside supplier for $20 per unit. If the part is purchased from the outside supplier, two thirds of the fored manufacturing costs can be eliminated. What will be the annual impact on the company's operating income of buying the part from the outside supplier? (Do not round intermediate calculations) Multiple Choice $2.000 decrease O $1000 increase $1.000 decrease $1,000 increase $1,000 decrease. $5,000 increase