An administrator is configuring two FortiGate devices in an HA cluster. While configuring the devices, the administrator issues the following commands on both HA cluster members:
config system ha
set link-failed-signal enable
In which two ways do these commands impact the HA cluster? (Choose two.)
A. They force the switches to update their MAC forwarding tables, when failover happens.
B. They force the former primary to send gratuitous ARP packets when the failover happens to indicate that the virtual MAC address is now using a different device.
C. They force both HA devices for remote link monitoring to detect an issue in the forwarding path.
D. They force the former primary to shut down all its interfaces for one second when failover happens, excluding the heartbeat and reserved management interfaces.