Information about the Harmonious Company's two products includes:

	Product X	Product Y
Unit selling price	$11.25	$11.25
Unit variable costs:
Manufacturing	$5.25	$6.75
Selling	.75	.75
Total	$6.00	$7.50
Monthly fixed costs are as follows:
Manufacturing	$82,500
Selling and administrative	45,000
Total	$127,500

What is the total monthly sales volume in units required to break even when the sales mix in units is 70 percent Product X and 30 percent Product Y?

a.26,563 units

b.8,667 units

c.4,333 units

d.28,667 units