Consider the following work breakdown structure:

$\backslash$table$[[,$Time Estimates $($days$)],[$Activity$,$Precedes,Optimistic,Most Likely,Pessimistic$],[$Start$,$A$,$ B$,$ C$,-,-,-],[$A$,$D$,38,50,62],[$B$,$E$,90,99,108],[$C$,$End,$85,100,115],[$D$,$F$,19,25,31],[$E$,$End,$91,100,115],[$F$,$End,$62,65,68]]$

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

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

$100$ days

$140$ days

$199$ days

$200$ days

$440$ days