Refer to the exhibit．

A、 These commands need to be added to the configuration:
C-router(config)# router eigrp 123
C-router(config-router)# network 172．19．0．0
B、 These commands need to be added to the configuration:
C-router(config)# router ospf 1
C-router(config-router)# network 172．19．0．0 0．0．3．255 area 0
C、 These commands need to be added to the configuration:
C-router(config)# router rip
C-router(config-router)# network 172．19．0．0
D、 Explanation/Reference:

【正确答案】 D

【答案解析】