What will cause a broadcast storm when configuring redundant VIO servers with SEA failover?

A.
The secondary SEA is brought online before the configured primary SEA.

B.
A mismatch of defined VLANs between the primary and secondary SEA.

C.
The secondary SEA is created before enabling failover on the primary SEA.

D.
Incorrect EtherChannel configuration on one SEA

Explanation: