Implementing Cisco IP Switched Networks (SWITCH v2-0) (#21)

Refer to the exhibit. Which description of the effect of entering the switchport trunk allowed vlan 2,3,4 command on FastEthernet0/2 is true?

The two workstations continue to communicate without a default gateway configured.
The command is unsupported on a trunk where VLANs have already been pruned manually.
The running configuration displays switch port trunk allowed vlan 1-5 for Fa0/2.
The two workstations stop communicating because they are on VLAN 5, which is not allowed on the trunk.