Assuming a constant mix of 3 units of X for every 1 unit of Y, a selling price of $25 for X and $40 for Y, variable costs per unit of $18 for X and $22 for Y, and total fixed costs of $78,000, the break-even point in units would be

The breakeven point in units would be ________.

a. 6,000 units of X and 2,000 units of Y

b. 12,000 units of X and 4,000 units of Y

c. 5,200 units of X and 1,800 units of Y

d. 3,600 units of X and 1,200 units of Y