Which of the Following Statements About the Smart Link Group

Which of the following statements about the Smart Link group is false?

A) A Smart Link group has two interfaces at most. The two interfaces if configured are an active interface and a standby interface.
B) Among the two interfaces in a Smart Link group, one is in the active state and the other one in the standby state in normal situations.
C) When the active interface goes down, the Smart Link group automatically blocks it and changes the status of the standby interface to active.
D) When the active interface recovers from a fault, traffic will be switched back to it immediately.