The voice VLAN feature has been enabled on a new Company Catalyst switch port.  What is the  effect of this？ （）

• A、The CoS is trusted for 802.1P or 802.1Q tagged traffic.
• B、PortFast is disabled on the port.
• C、Port Security is automatically enabled on a voice VLAN port.
• D、Untagged traffic is sent according to the default CoS priority of the port.
• E、None of the other alternatives apply