The diagram of a small switched network, with all switches acting as layer $2$ switches in VLAN $10.$ The diagram notes the switch chosen as root switch, with each root port noted with the letters RP and each designated port noted with the letters DP$.$ All three switches use RSTP$,$ and they might also have other RSTP configuration settings not noted in the question. Which of the following statements about RSTP states and roles in this network are true?

SW$2$s port Gi$0/1$ must be in an alternate port role.

SW$1$s port Gi$0/1$ might be in an alternate port role.

SW$2$s port Gi$0/1$ must be in a backup port role.

SW$1$s port Gi$0/1$ might be in a backup port role.