How does the switch handle this traffic?

Refer to the exhibits.

Exhibit 1.

Exhibit 2.

The VoIP phone connects, authenticates successfully, and is dynamically assigned to tagged VLAN 6. The endpoint connected to the phone does not authenticate but starts to send untagged traffic.

How does the switch handle this traffic?
A . It forwards the traffic in VLAN 5.
B . It relays the traffic to the RADIUS server for authentication.
C . It forwards the traffic in VLAN 6.
D . It drops the traffic.

Answer: B