Dell wants to calculate the lifetime value of the customer. If half yearly average revenue of a customer is 26000, the average product cost associated with the customers'purchase is 400 per year, the firm also provides customer service !00 per year per customer, consider annual churn rate 70%,average cost to acquire new customer 10/customer and discount rate 10%. Calculate Customer lifetime value.(CLV) if the retention rate increase to 90% what will be the CLV