Which command is used to add interfaces to VLAN 5? A. switchport mode trunk vlans All B. switchport mode trunk in Global Configuration mode C. switchport mode trunk on each interface D. None of the above Solution C is correct. switchport mode trunk is used on each interface. A, B, and D are incorrect. A is incorrect because this command syntax does not exist. B is incorrect because the switchport mode trunk commands are not entered globally. D is incorrect because this choice is not valid..