If fixed costs are $269,000, the unit selling price is $75, and the unit variable costs are $54, the old and new break-even sales (units), respectively, if the unit selling price increases by $5 are Oa. 3,587 units and 12,810 units Ob. 4.981 units and 9,846 units Oc. 12,810 units and 10,346 units Od. 12,810 units and 3,587 units