X Company is considering buying a part next year that they currently make. This year's production costs for 3,100 units were as follows:

		Per-Unit	Total
Direct materials		$3.45	$10,695
Direct labor		4.65	14,415
Variable overhead		3.00	9,300
Fixed overhead		4.50	13,950
Total		$15.60	$48,360

A company has offered to supply this part to X Company for $14.40 per unit. If X Company accepts the offer, it will still incur fixed costs of $6,556, but it will be able to lease the resources that will become available from not making the part for $2,000. At what production level would X Company be indifferent between making and buying the part next year?

A: 684

B: 910

C: 1,210

D: 1,609

E: 2,140

F: 2,847