14. Mutually exclusive projects A and B have valid (acceptable) individual internal rates of return (IRR). Project A's first cost (PA) is less than Project B's first cost (PB). If the Incremental Internal Rate of Return between the two projects exceeds the MARR, which project would you select? a) A b) B c) A and B d) Neither Anor B 15. Mutually exclusive projects A and B have 10-year and 5-year durations (lives) respectively and positive Net Future Worth values (before adjustment for their different lives. If Project A's Net Future Worth is less than Project B's Net Future Worth, which project is better? a) A b) B c) A and B d) Insufficient information to decide on the better project. 16. If two mutually exclusive projects A and B are compared using the Future Worth Method and the Annual Equivalent Method, both methods will always lead to the same decision as to the better project. a) True b) False 17. You are asked to determine the economic validity of projects A and B using the External Rate of Return Method (ERR). Is a common period of analysis necessary to determine their acceptability? a) Yes b) No 18. You are given two mutually exclusive projects A and B where PA > Pe; NA > NB and IRRA Pe; NA > NB and IRRA