plz answer this question quick (will like up c:)

If fixed costs are $1,269,000, the unit selling price is $229, and the unit variable costs are $105, the amount of sales (units) required to realize an operating income of $216,000 is Oa: 11.976 units Ob. 5,541 units Oc. 2,057 units Od. 12.086 units