Based on the following table, we'd like to create AON network. What's the critical path?

Activity	Predecessor	Duration (days)
A		3
B	A	4
C	A	2
D	B	5
E	C	1
F	C	2
G	D, E	4
H	F, G	3

	a.	A->B->D->G->H
	b.	A->C->E->G->H
	c.	A->C->F->H
	d.	A->B->E->G->H