Which two statements about Cisco ASA failover troubleshooting are true?

Which two statements about Cisco ASA failover troubleshooting are true? (Choose two.)

A.
With active/active failover, failover link troubleshooting should be done in the system execution space.

B.
With active/active failover, ASR groups must be enabled.

C.
With active/active failover, user data passing interfaces troubleshooting should be done within the context execution space.

D.
The failed interface threshold is set to 1. Using the show monitor-interface command, if one of the monitored interfaces on both the primary and secondary Cisco ASA appliances is in the unknown state, a failover should occur.

E.
Syslog level 1 messages will be generated on the standby unit only if the logging standby command is used.