BirchCompany manufactures a part for its production cycle. Thecosts per unit for 5,000 units of this part are asfollows:
Directmaterials $3
Directlabor 5
Variable factoryoverhead 4
Fixed factoryoverhead 4
Total costs $16
The fixed factoryoverhead costs are unavoidable. Spalding Corporation has offered to sell 5,000 units of the same part to Birch Company for$15 a unit. Assuming no other use for the facilities, Birch Company should _____.
A. buy from ScaldingCorp to save $1 per unit
B. make the part tosave $1 per unit
C. buy from ScaldingCorp to save $3 per unit
D. make the part tosave $3 per unit