About configuring services in our T31 EMS, which of the following are correct?()
B. To select endpoint for end-to-end PTN Ethernet service, first select NE and then corresponding port or UNI interface
C. To create TREE service, all CIP/VIP nodes have leaf attributes and root attributes when ZXCTN6000 device acts as root node
D. To create TREE service, all PWs and CIPs have hub attributes and spoke attributes when ZXCTN9000 (2.08 32R1) acts as root node