If fixed costs are $345,000, the unit selling price is $70, and the unit variable costs are $46, what are the old and new break-even sales in units (rounded to a whole number) if the unit selling price increases by $8? Oa. 7,500 units and 10,281 units Ob. 14,375 units and 4,929 units Oc. 4,929 units and 14,375 units Od. 14,375 units and 10,781 units