You are bringing up a new Cisco Catalyst switch, and wish to connect it via a trunk to another switch from a different vendor, which uses the IEEE standard for the trunking method. When setting the encapsulation type on the trunk, what should you configure on the Cisco switch?（）

• A、Switch(config)# switchport trunk encapsulation isl
• B、Switch(config)# switchport trunk encapsulation ietf
• C、Switch(config-if)# switchport trunk encapsulation isl
• D、Switch(config-if)# switchport trunk encapsulation ietf
• E、Switch(config-if)# switchport trunk encapsulation dot1q