After a Software Upgrade on an SRX5800 Chassis Cluster, You

After a software upgrade on an SRX5800 chassis cluster, you notice that both node0 and node1 are in the primary state, when node1 should be secondary. All control and fabric links are operating normally. In this scenario, which step must you perform to recover the cluster?

A) Execute the request system reboot command on node1. Execute the request system reboot command on node1.
B) Execute the request system software rollback command on node0. request system software rollback command on node0.
C) Execute the request system software add command on node1. request system software add
D) Execute the request system reboot command on node0.