A project has five activities with the durations (days) listed below:

Activity	Precedes	Expected Duration	Variance
Start	A, B	-	-
A	C	96	0.1
B	E	23	1
C	D	31	0.37
D	End	36	3.53
E	End	27	0

What is the probability that the project will be completed within 171 days?

a.

1

b.

0.25

c.

0

d.

0.18

e.

0.82