When a frame is not tagged with 802.1Q VLAN identifying information, what happens when it traverses a trunk port?

A. The frame is dropped to the bit bucket.
B. The frame is forwarded to the default VLAN.
C. The frame is forwarded to the native VLAN.
D. The frame is sent to the first VLAN ID configured on the trunk.

C. When a frame traverses a trunk and does not have VLAN tagging information in the 802.1Q encapsulation format (untagged), it is sent to the native VLAN configured on the trunk.