Determine question $33$ to $36$ based on the following problem $($Table $1-2)$:

Table $1-2$

Immediate

Most

Activity Predecessor Optimistic Likely Pessimistic

A

$4$

$5$

$6$

B

$12$

$16$

$18$

C

A

$2$

$8,14$

D

A

$5$

$5$

$5$

E

B$,$ C

$6$

$7$

$8$

According to Table $1-2,$ there are five activities in a PERT project. Which activities are on the critical path?