A company purchased a vibratory finishing machine for $20,000 in year 0. The useful life of the machine is 10 years, at the end of which, the machine is estimated to have a zero salvage value. The machine generates net annual revenues of $6,000. The annual operating and maintenance expenses are estimated to be $1,000. If the company MARR is 10%, how many years does it take before this machine becomes profitable? Select one: A. 5 years <>