An engineer have to design a multicast domain for some application. This multicast network should be secured. Which option should he take ?

A.
ASM with an addressing of 224.0.0.0/8

B.
ASM with an addressing of 232.0.0.0/8

C.
SSM with an addressing of 224.0.0.0/8

D.
SSM with an addressing of 232.0.0.0/8

Explanation:
Source-specific multicast (SSM) is a method of delivering multicast packets in which the only packets that are delivered to a receiver are those originating from a
specific source address requested by the receiver. By so limiting the source, SSM reduces demands on the network and improves security.
SSM destination addresses must be in the ranges 232.0.0.0/8 for IPv4.
For IPv6 current allowed SSM destination addresses are specified by FF3x::/96 though the allocation may be extended in the future so receivers and network
equipment should treat any FF3x::/32 address as SSM.