An administrator receives notice of a large number of ARP table
issues. The issues began after a maintenance window 36 hours ago. The issue did not exist
prior to the maintenance window. Which change was made to the port group that is causing
the ARP table issue?

A.
Uplink 2 was changed from Standby to Active.

B.
Failback was changed to Yes.

C.
Notify Switches was changed to No.

D.
Network failure detection was changed to Link status only.