Which of the following is true about all$-$to$-$all personalized communication?

In all$-$to$-$all personalized communication, each node sends a distinct message of size m to every other node.

Each node sends similar messages to different nodes.

The communication is similar to an all$-$to$-$all broadcast.

In all$-$to$-$all personalized communication, each node sends the same message of size m to every other node.