The network operations center has received a call stating that users in VLAN 107 are unable to
access resources through Router 1. From the information contained in the graphic, what is the
cause of this problem?

A.
spanning tree is not enabled on VLAN 107

B.
VLAN 107 does not exist on switch A.

C.
VTP is pruning VLAN 107

D.
VLAN 107 is not configured on the trunk