Question: in the following table with the activity of the precedence...

In the following table with the activity of the precedence sequence and expected time (days) are listed for a project:

Activity Immediate Predecessors Time (days)

A - 7

B A 2

C A 4

D B 5

E B 5

F C 5

G E,F 2

H D 3

I G,H 7

a.) The activities on the critical path are: __________

b.) The project length is _______ days.