A hacker on the Company network is attempting to hop onto a different VLAN.  Which two  statements about VLAN hopping are true？ （）

• A、 An end station attempts to gain access to all VLANs by transmitting Ethernet frames in the  802.1q encapsulation.
• B、 Configuring an interface with the "switchport mode dynamic" command will prevent VLAN  hopping.
• C、 Attacks are prevented by utilizing the port-security feature.
• D、 Configuring an interface with the "switchport mode access" command will prevent VLAN  hopping.
• E、 An end station attempts to redirect VLAN traffic by broadcasting multiple ARP requests.