Eight years ago, the B company installed an automated converyor system for $38,000. when the converyor is replaced, the net cost of removal will be $2500. The minimum EUAC of a new conveyor is $5500. When should the conveyor be replaced if B company MARR is 12%? The operation and maintance cost for the next 5 years are $5K, $6K, $7K, $8K, and $9K.