单选题
在某园区网中，路由器R
A的GE0/1(196.28.57.5/30)与路由R
B的GE0/1(196.28.57.6/30)相连，R
B的GE0/2(196.28.57.9/30)与路由器R
C的GE0/1(196.28.57.10/30)相连，R
C路由器的GE0/2(196.28.57.13/30)直接连Internet上的路由器相连，路由器R
A访问Internet默认路由的正确配置是
- A. ip route 0.0.0.0 0.0.0.0 196.28.57.6
- B. ip route 0.0.0.0 0.0.0.0 196.28.57.9
- C. ip route 0.0.0.0 0.0.0.0 196.28.57.10
- D. ip route 0.0.0.0 0.0.0.0 196.28.57.13