For Example $12\mathrm{.}4,$ suppose that the programmers choose not to obtain additional help to complete the project; that is$,$ Bonner will code the modules without outside assistance.a$.$Inwhat way will this alter the project network and the precedence constraints?b$.$Find thecritical path of the project network you obtained in part $($a$).$ How much longer is itthan the one determined in Example $12\mathrm{.}4?$