Suppose your firm is evaluating four potential new investments. You calculate that theseprojects, Q, X, Y, and Z, have the NPV and IRR figures given below: Project Q: NPV = $1,000 IRR = 16%Project X: NPV = -$4,000 IRR = 12% Project Y: NPV = $5,000 IRR = 14%Project Z: NPV = -$899 IRR = 18%a) Which project(s) should be accepted if they are independent? Clearly explain your reasoning. b) Which project(s) should be accepted if they are mutually exclusive? Clearly explain your reasoning.