You configure a new VLAN of 22 on Switch A. You have configured a few access links with the new VLAN and they work as normal. They do not forward traffic to ports configured in the same VLAN on Switch B. All other VLANs function fine between the switches. What is the problem?
Refer to the following exhibit.

A. The native VLAN must be changed.
B. The VLAN is not allowed over the trunk.
C. The trunk encapsulation is wrong.
D. VTP is not set up on the remote switch.

B. The VLAN is not allowed over the trunk because of the switchport trunk allowed vlan 4,6,12,15 command.