activities and their optimistic completion time, the most likely completion time, and the pessimistic completion time $($all in days$)$ for a new contract are given in the following table:

b$)$ Activities on the critical path for the project are

The toal project completion time is $?$ days

c$)$ For the given project, the earliest start$($ES$)$ and earliest finish$($ EF$)$ are

A$,$B$,$C$,$D$,$E$,$F$,$G$,$H$,$I,J$,$K

d$)$ For the given project, the lastest start$($LS$)$ and lastest finish$($LF$)$ are

K$,$J$,$I,H$,$G$,$F$,$E$,$D$,$C$,$B$,$A