A. Devina must make a decision about her future investment to build a toll in Java or Sumatera. So, she hired a consultant to help him find a final decision about her investment. Then, her consultant finally gives this following data: Period Toll in Sumatera Toll in Java IRR 12% 15% PI 0,5 1,2 NPV 64,59 64,00 Discounted Payback Back in 4 years Back in 3 years AAR 21% 24% 1 Which project must Devina choose for her future investment? Does she choose toll in Java or Sumatera and tell us the reason why she chose it? 2 What is a mutually exclusive project? Does that affect the NPV and IRR