4. (10 points) ABC sells three types of ice cream: Vanilla, caramels, and Chocolate. It sold 11,000 units last year. Chocolate outsold Vanilla by a margin of 2 to 1. Sales of caramels were the same as sales of Chocolate. Fixed costs for ABC are $15,000. Addi- tional information follows: Product Unit sales Unit variable price cost Vanilla $6 84 Caramel $7 $6 Chocolate $9/82 Instruction: Calculate the break-even sales volume in units for the company