For a given change in short-term financial management policies, the CCC is expected to be cut in half. For a credit sale that was just made, the increased NPV from the shorter CCC is $10,000. Assume a discount rate of 7.30 percent. 

a. Calculate the cumulative change in firm value from the shorter CCC, assuming that a comparable sale is made each year on this date in perpetuity. 

b. Rework your answer for Part A, assuming that the firm sells to this customer biannually. 

c. Rework your answer for Part A, assuming that the firm sells to this customer quarterly. d. How would your calculations change if the first sale occurred one year from today (and all other factors held constant)?