You want to delete VLAN 1 for security reasons. However, the switch will not let you. What is the reason you cannot delete VLAN 1?

A. The VLAN is still configured on a port.
B. The VLAN serves as the switch’s main management IP.
C. The VLAN is protected from deletion.
D. The VLAN is still configured as a native VLAN on a trunk.

C. VLANs 1 and 1002 through 1005 are protected by the IOS and cannot be changed, renamed, or deleted.