StreaminNow is a company that has been in operation for 10 years. The company has a stable base of 4,500,000 customers. The cost per acquired customer is estimated at $40. Going forward, the company estimates customer churn to be in the region of 30 to 40 %. The average margin from each customer in a given year is estimated to be anywhere between $15 to $19. The discount rate applicable for $treaminNow is 10%. For all parts of this question, show the steps in your calculations and indicate the final answers in the space provided below: 

a. What is the estimated CLV for $treaminNow, assuming the best-case scenario for churn and margin?  

b. What is the estimated CLV for $treaminNow, assuming the worst-case scenario for churn and margin?

c. Assume the best-case scenario for $treaminNow. Looking back, was the company justified in spending $40 per acquired customer? Explain your answer with appropriate computations and supporting numbers.  

d. ReTune$ is a company seeking to acquire $treaminNow. ReTune$ expects to keep churn at 30% and estimates it would earn an average margin of $ 19 from each customer, each year.