Problem $3-6.$ PERT$/$CPM use space below and on next page; show your work$3.(/12$ points$)$ For the following PERT problem, identify below the normal solution $($path$,$ time, and cost$)\mathrm{.}4.(/28$ points$)$ Identify below the ES$/$EF$/$LS$/$LF for each activity working with the normal time values$\mathrm{.}5..(/14$ points$)$ Identify below the change in cost over the change in days for each activity$6.(/12$ points$)$ On the next page identify the all$-$crash solution $($path$,$ time, cost$)$Activity$/$normal time$/$normal cost$/$crash time$/$crash costA$20$ days$$50010$ days$$2,00030$$$40010$$$1,20050$$$20030$$$2,00020$$$2005$$$1,000$MUAULO$18$$$8008$$$3,00060$$$80020$$$2,00020$$$1,60020$$$1,600$