Activity name$-$ duration$-$ predecessors

A$-4-$none

B$-3-$a

C$-4-$b

D$-5-$b

$E-8-c,d_{{?}_{?}}$

Determine the activities along the critical path as well as the total project duration $|$

A$.$ critical path activities $A,D,E$ total project duration $17$ days

B$.$ critical path activities a$,$ cot d e total project duration $21$ days

C$.$ critical path activities A$,$b$,$e total project duration $15$ days

D$.$ critical path activities $a,b,d,e$ total project duration $20$ days