Which of the below given statement$($s$)$ is$/$are correct about Peer$-$to$-$Peer network?

Unreliable

II$)$ Backup and recovery of data is easy.

III$)$ Not advisable to use this network when dealing with important sensitive data.

Only $($II$)$

Only $($II$)$ and $($III$)$

Only $($III$)$

Only $($I$)$ and $($II$)$