X Company is considering buying a part next year that they currently make. This year's per-unit production costs for 98,500 units of this part were: Materials Direct labor $6.36 4.47 Variable overhead Fixed overhead Total 4.44 1.72 $16.99 A company has offered to supply this part for $16.04 per unit. If X Company buys the part, $91,487 of the total fixed overhead is unavoidable, and there is no alternative use of the resources that will become idle. Production next year is expected to be 94,500 units. If X Company buys the part instead of continuing to make it, it will save A: $3,886 B: $5,168 OC: $6,874 OD: $9,142 OE: $12,159 F: $16,171