单项选择题

在GRE Tunnel接口视图下,配置Keeplive报文的发送周期为10s,判断隧道中断所需要的Keeplive报文的传送次数为3,命令为()。

A.keepalive 103
B.keepalive 3 10
C.keepalive-interval 10
D.keepalive-times 3