Andrews Co. can purchase 20,000 units of Part XYZ from a supplier for $18 per part. Andrews' per unit manufacturing costs for 20,000 units is as follows: Cost Per Unit Total Variable manufacturing cost $12 $240,000 Supervisor salary $3 $60,000 Depreciation $1 $20,000 Allocated fixed overhead $7 $140,000 If the part is purchased, the supervisor position will be eliminated. The special equipment has no other use and no salvage value. Total allocated fixed overhead would be unaffected by the decision. The company should