Marigold Corp. sells two types of computer hard drives. The sales mix is 30% (Q-Drive) and 70% (Q-Drive Plus). Q-Drive has variable costs per unit of $30 and a selling price of $90. Q-Drive Plus has variable costs per unit of $45 and a selling price of $135. Marigold's fixed costs are $648000. How many units of Q-Drive would be sold at the break-even point? 8000 O 3240 2400 5600