Consider the following work breakdown structure:

Time Estimates $($days$)$

Activity Precedes Optimistic Most Likely Pessimistic

Start A$,$B $---$

A C$,$D $445056$

B D $456075$

C E $424548$

D F $314049$

E F $273639$

F End $587082$

What is the estimated expected $($mean$)$ time for activity E$?$

Multiple Choice