In facing competition, Apple Inc. is debating whether to enter the smart eye glass business by launch a new product called AppleGlass or to introduce a smart home control system called iHome. The projected investment and cash flows for the two proposed projects are (in million): (a) Among AppleGlass and iHome, which project should Apple choose if the discount rate is 5\%? Now, which project should Apple choose if the discount rate were 15% instead, and why? (b) Find the IRR for AppleGlass and iHome using "trial-and-error" method. Is there any reason to believe that the project with the higher IRR is the better project? (c) What are the pure payback periods for the two projects? Is there any reason to believe that the project wit shorter payback is the better project