W.T. Ginsburg Engine Company manufactures part ACT31107 used in several of its engine models. Monthly production costs for 1,000 units are as follows:

Directmaterials$42,000

Directlabor10,500

Variable overheadcosts32,500

Fixed overheadcosts18,000

Totalcosts$103,000

It is estimated that 6% of the fixed overhead costs assigned to ACT31107 will no longer be incurred if the company purchases ACT31107 from the outside supplier. W.T. Ginsburg Engine Company has the option of purchasing the part from an outside supplier at $94.75 per unit.

If W.T. Ginsburg Engine Company purchases 1,000 ACT31107 parts from the outside supplier per month, then its monthly operating income will ________. (Round any intermediary calculations and your final answer to the nearest cent.)

A.increase by $21,330

B.decrease by $8,670

C.increase by $8,670

D.decrease by $21,330