An existing robot is used in a commercial material laboratory to handle ceramic samples in the high temperature environment that is part of several test procedures. Due to changing customers needs, the robot will not meet the future service requirement unless it is upgraded at cost of RM 2,000. Because of this situation, a new advanced technology robot has been selected for potential replacement of the existing robot. The firm's before tax MARR is 25% per year. Based on the information in TABLE Q2, should the existing robot be replaced? Assume that a robot will be needed for an indefinite period. TABLE Q2 Defender Current MV RM 38 200 Upgrade cost (year O) RM 2000 Annual expenses RM 1400 (year 1) (increase 8%/year) Useful life (years) 6 MV at the end of -RM 1500 useful life Challenger Purchase price RM 51 000 Installation cost RM 5 500 Annual expenses RM 1000 (year 1) (increase RM 150 / year) Useful life (years) 10 MV at the end of RM 7000 useful life [25 marks]