Which statement is true regarding Cisco ASA stateful failover?

A.
It is recommended to share the failover link with the inside interface for security purposes.

B.
The failover link is encrypted by default to protect eavesdropping.

C.
VPN users must reauthenticate, even though the connection remains established.

D.
Clientless features, such as smart tunnels and plug-ins, are not supported.