4. Consider the following graph for the present worth va interest rate. a. When MARR =16% which project(s) should be chosen? Answer the question by analyzing two cases: Case 1: Projects 1,2, and 3 are mutually exclusive. (2 points) Case 2: Projects 1,2 , and 3 are not mutually exclusive. ( 2 points) b. Assume the projects are mutually exclusive, and your MARR is 42%. Which project should be the best option? ( 2 points) c. At what value of the MARR is Project 2 chosen? Note: projects are mutually exclusive. (2 points) d. Complete the following table with the IRR estimations. Note: Use the graph, and you could round the nercentage. ( 7 points)