If fixed costs are $288,000, the unit selling price is $75, and the unit variable costs are $49, the old and new break-even sales (units), respectively, if the unit selling price increases by $5 are a.3,840 units and 11,077 units b.11,077 units and 3,840 units c.11,077 units and 9,290 units d.5,878 units and 8,790 units