If fixed costs are $292,000, the unit selling price is $70, and the unit variable costs are $45, the old and new break-even sales (unit respectively, if the unit selling price increases by $8 are Oa. 6,489 units and 8,348 units Ob. 11,680 units and 4,171 units c. 11,680 units and 8,848 units Od. 4,171 units and 11,680 units