X Company currently makes a part and is considering buying it next year from a company that has offered to supply it for $15.20 per unit. This year, total costs to produce 67,000 units were:

Direct materials			$448,900
Direct labor			268,000
Variable overhead			247,900
Fixed overhead			268,000

If X Company buys the part, $32,160 of the fixed overhead is avoidable. The resources that will become idle if they choose to buy the part can be used to increase production of another product, resulting in additional total contribution margin of $15,000. The marketing manager estimates that demand next year will increase to 71,650 units. If X Company continues to make the part instead of buying it, it will save

A: $5,422

B: $6,344

C: $7,422

D: $8,684

E: $10,160

F: $11,887