An engineering firm has identified multiple alternative procedures/projects to cut costs in its main office. Only one of the options can be implemented; however, each involves significant training time for employees. Information about the alternative projects is provided in the table below. The lifespan of each project is seven years and the firm's MARR is 10%. What is the best option? a. Solve using present worth analysis. b. Solve using uniform annual worth analysis. c. Solve using internal rate of return method (Hint: use incremental rate or return) d. Solve using the benefit-cost ratio method (Hint: use incremental benefit-cost ratio)