Five Friends Have Access To A Chat Room It Is Possible To Determine Who Is Chat

“five friends have access to a chat room . It is possible to determine who is chatting if the following information is konwn? Either kevin or Heather or both are chatting. Either Randy or Vijay but not both are chatting . If Abby is chatting so is Randy . Vijay and Kevin are either both chatting or neither is . If Heather is chatting then so are Abby and Kevin. Explain your reasoning?

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