A Project Has Estimated Sales of 11,500 Units,±2 Percent

A project has estimated sales of 11,500 units,±2 percent.The expected variable cost per unit is $13,and the expected fixed costs are $29,000.The fixed and variable cost estimates are considered accurate within a range of ±3 percent.The sales price is estimated at $29 a unit,±1 percent.What is the contribution margin for a sensitivity analysis using a fixed cost of $30,000?

A) $13
B) $14
C) $15
D) $16
E) $17