What HA setting must be changed in one of the HA clusters to fix the problem?

Two independent FortiGate HA clusters are connected to the same broadcast domain. The administrator has reported that both clusters are using the same HA virtual MAC address. This creates a duplicated MAC address problem in the network.

What HA setting must be changed in one of the HA clusters to fix the problem?
A . Group I
C . Group name.
D . Session pickup.
E . Gratuitous ARPs.

Answer: A

Explanation:

https://help.fortinet.com/fos50hlp/54/Content/FortiOS/fortigate-high-availability-52/HA_failoverVMAC.htm