Consider the following work breakdown structure:

$\backslash$table$[[,$Start,Finish,Time,Estimates$($wks$)],[$Activity$,$Node,Node,$t_0,t_m,t_p,,],[$A$,1,2,11,20,29,,],[$B$,2,3,2,5,8,,],[$C$,2,4,18,30,42,,],[$D$,3,4,7,10,13,,],[$E$,1,4,31,40,43,,]]$

What is the estimated expected $($mean$)$ time for project completion?

Learning Objective: $17-08$ Analyze networks with probabilistic times.

$35$ weeks

$39$ weeks

$50$ weeks

$104$ weeks

$105$ weeks