Assume that the R1 router is enabled for PIM-SM and receives a multicast packet sourced from 172.16.1.100, and the R1 router has multicast receivers on the Gi0/1, Gi0/2, Gi0/3 and Gi0/4 interfaces.
R1 routing table: 172.16.1.0/24 via Gi0/1 172.16.2.0/24 via Gi0/2 172.16.3.0/24 via Gi0/3 0.0.0 0/0 via Gi0/4
The multicast packet from the 172.16.1.100 source must arrive on which interface on the R1 router for it to be forwarded out the other interfaces?

A.	Gi0/1
B.	Gi0/2
C.	Gi0/3
D.	Gi0/4
E.	Gi0/1 or Gi0/2 or Gi0/3 or Gi0/4
F.	Gi0/2 or Gi0/3
G.	Gi0/1 or Gi0/4