Find Out the Customer Lifetime Value Using the Following Information

Find out the customer lifetime value using the following information and a discount rate of 8%.
Average Annual Sales = $4,000 (treat the average sales as annuity)
Average Profit Margin = 12%
Expected Lifetime in Years = 11

A) $4,000
B) $480
C) $3,427
D) $1,900
E) Do not have enough information to compute