You work as a technician at TestKing. You are configuring a Cisco router. You want to configure the IP address on an interface.Which command should you use?（）
- A router(config-if)#ip address 142.8.2.1 subnet mask 255.255.252.0
- B router(config-if)#142.8.2.1 0.0.3.255
- C router(config-if)#ip address 142.8.2.1 255.255.252.0
- D router(config-if)#142.8.2.1 subnet mask 255.255.252.0
- E router(config-if)#ip address 142.8.2.1 0.0.3.255
- F router(config-if)#ip address 142.8.2.1 subnet mask /22