Which statements about VLAN configuration are true? (Choose two.)
A. You can enter the VLAN view at the same time you create a VLAN.
B. If you run undo vlan, the VLAN is invalid, but still exists. You do not need to create the VLAN when you use it next time.
C. You can configure a character string of VLAN description. The length of the character string is not limited.
D. If you do not enter the VLAN ID when running the display vlan command, information about all VLANs will be displayed.