Given the following table, use the CPM technique to draw the network diagram and answer below questions.

Activity	Optimistic Time	Most Likely Time	Pessimistic Time	Immediate Predecessor Activities
a	10	22	28
b	12	24	30
c	6	12	18
d	4	16	34	a
e	8	8	20	a,b,c
f	8	14	20	a,b,c
g	4	4	4	a,b,c
h	4	14	18	c
i	6	16	38	g,h
j	4	10	16	d,e

Critical Path:

1/ c,h,i

2/ a,d,j

3/ a,e,j

4/ b,e,j

The project Critical Time:

a.41 days

b.43 days

c.45 days

d.48 days

Calculate the total float and free float of activity (e)

a.0 days free float and 0 days total float

b.5 days free float and 0 days total float

c.0 days free float and 5 days total float

d.5 days free float and 5 days total float