单项选择题

BGP邻居PeerA在Open中携带的Hold timer时间是90s,PeerB在Open中携带的Hold timer时间是30s,peerA和PeerB建连成功后发送Keepalive消息的时间间隔是()

A.90s
B.30s
C.10s
D.不发送keepalive报文

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