Which improvements does IGMPv3 offer over IGMPv2?

IGMP has versions IGMP vl, v2 and v3. Which improvements does IGMPv3 offer over IGMPv2?

A.
IGMPv3 added the ability for a host to specify which sources in a multicast group it wishes to receive

B.
IGMPv3 added the ability for a host to specify which sources in a multicast group it does not wishes to receive

C.
IGMPv3 removed the ability to perform a wildcard join of all sources in a multicast group

D.
IGMPv3 removed the report-suppression feature for IGMP membership reports

Explanation:
IGMPv1, IGMPv2 and IGMPv3

Internet Group management protocol (IGMP), a multicasting protocol in the internet protocols family, is used by IP hosts to report their host group memberships to any immediately neighboring multicast routers. IGMP messages are encapsulated in IP datagrams, with an IP protocol number of 2. IGMP has versions IGMP v1, v2 and v3.

IGMPv1: Hosts can join multicast groups. There were no leave messages. Routers were using a time-out based mechanism to discover the groups that are of no interest to the members.

IGMPv2: Leave messages were added to the protocol. Allow group membership termination to be quickly reported to the routing protocol, which is important for high-bandwidth multicast groups and/or subnets with highly volatile group membership.

IGMPv3: Major revision of the protocol. It allows hosts to specify the list of hosts from which they want to receive traffic from. Traffic from other hosts is blocked inside the network. It also allows hosts to block inside the network packets that come from sources that sent unwanted traffic.

The variant protocols of IGMP are:
DVMRP: Distance Vector Multicast Routing Protocol.
IGAP: IGMP for user Authentication Protocol.
RGMP: Router-port Group Management Protocol.