3- Consider the following sets of investment projects: Project A Project B Project C First Cost Annual Maintenance Salvage Value Useful Life $ 8000 $ 750 S 1200 5 years SX $ 250 $ 2400 15 years S 11000 S 600 $ 1800 10 years Basing on the equivalent annual worth of each project, what is the maximum value of X making the Project B most acceptable. (20 points)