Given the following information and options, calculate how many years this project should be run before it is retired. Assume the cost of capital is 10% p.a. Maximum life is five years.

Year 0Year 1Year 2Year 3Year 4Year 5year

Cash Flows ($) (10,000) 2,200 3, 000 3,500 2,500 2,000

Retirement Value($) 6,000 5,000 4, 000 3,000 1,000