The Company LAN switches are being configured to support the use of Dynamic VLANs. Which of  the following are true of dynamic VLAN membership？（）

• A、VLAN membership of a user always remains the same even when he/she is moved to another  location.
• B、VLAN membership of a user always changes when he/she is moved to another location.
• C、Membership can be static or dynamic.
• D、Membership can be static only.
• E、None of the other alternatives apply.