Solve clearly

You are looking at three possible designs of irrigation systems for your chilli plantation. The cash flow for each of the designs is given in Table $3. Use incremental IRR method to select the best design if MARR is 10%. Jadual S3/ Table S3 Rekabentuk Design A B C Kos permulaan 12,000 20,000 29,000 Initial cost (RM) Faedah tahunan 3,500 6,000 8,000 Annual benefit (RM) Hayat berguna 6 6 6 Useful life (year)