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多选题
Which tree of these are types of Ethernet Virtue Connections （EVCs） in the MEF concept？（）
A
multipart-to-multipoint EVC （E-LAN）
B
hub spoke EVC （E-Tree）
C
point to point EVC （E-Line）
D
rooted multipoint EVC （E-Tree）
E
point-to-multipoint EVC （E-Tree）
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