In the following table the activities with their precedence sequence and expected time? (days) are listed for a? project:
Activity Immediate Predecessor(s) 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 5
a) The activities on the critical path are
b) The project length is