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What are the functions of an IGMPv2 Query message? (Choose three.)

A. A router sends IGMPv2 Query messages to collect group memberships of receiver hosts.

B. A router sends IGMPv2 Query messages to elect a querier.

C. If a router can periodically send IGMPv2 Query messages, it indicates that the router runs properly.

D. Based on IGMPv2 Query messages, receiver hosts can obtain the address of a querier and unicast Report messages to the querier.

Explanation:

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