Roger Ginde is developing a program in supply chain management certification for managers. Ginde has listed a number of activities that must be completed before a training program of this nature could be conducted. The activities, immediate predecessors, and times appear in the accompanying table:

ACTIVITY IMMEDIATE PREDECESSOR$($S$)$ TIME$($DAYS$)$

A $-----2$

B $-----5$

C $-----1$

D B $10$

E A$,$D $3$

F C $6$

G E$,$F $8$

a$.$ what is the critical path?

b$.$ What is the total project completion time?

a$.$ Critical path is B$$D$$E$$G

$($b$)$ Total project takes $25$ days

a$.$ Critical path is A$$D$$E$$G

$($b$)$ Total project takes $23$ days

a$.$ Critical path is B$$D$$E$$G

$($b$)$ Total project takes $26$ days

a$.$ Critical path is B$$D$$E$$G

$($b$)$ Total project takes $21$ days