[单项选择]Router R1 needs to be configured to advertise a specific network. Which of the followingcommands would you use if you wanted to advertise the subnet 154.2.1.0 255.255.255.0 to the EBGP neighbors on your subnet?() A. Router (config-router)#network 154.2.1.0 B. outer (config-router)#network 164.2.1.0 C. Router (config-router)#network-advertise 154.2.1.0 D. Router (config-router)#network 154.2.1.0 mask 255.255.255.0 E. None of the other alternatives apply