4. At an output level of 17,500 units, you have calculated that the degree of operating leverage is 3.42. The operating cash flow is $64,000 in this case. Ignoring the effect of taxes,

a.) what are fixed costs?

b.) What will the operating cash flow be if output rises to 18,500 units?

c.) What will the operatingc ash flow be if output falls to16,500 units?