Which of the following statements about the refreshing mechanism in the case of link switchover in a Smart Link group is false?
A. MAC and ARP entries are refreshed automatically against traffic.
B. The Smart Link group uses a new link to send Flush packets.
C. When the active link recovers from a fault, Flush packets are sent to refresh entries.
D. When recovering from a fault, the active link remains blocked and traffic is not switched back to it. In this way, traffic keeps stable.