若路由器显示的路由信息如下，则最后一行路由信息是______得到的。
R3#show ip route
Gateway of last resort is not set
192.168.0.0/24 is subnetted, 6 subnets
C 192.168.1.0 is directly connected，Ethernet0
C 192.168.65.0 is directly connected, Serial
C 192.168.67.0 is directly connected, Seriall
R 192.168.69.0 [120/1] via 192.168.67.2, 00:00:15, Seriall
[120/1] via 192.168.65.2, 00:00:24, Serial0
R 192.168.5.0 [120/1] via 192.168.07.2, 00:00:15, Seriall
R 192.168.3.0 [120/1] via 192.168.65.2, 00:00:24, Serial0
A．串行口直接连接的
B．由路由协议发现的
C．操作员手工配置的
D．以太网端口直连的
