【单选题】
A Transport= 1,Router= Traffic,InterfacelPv4= Traffic
B Transport= 1,Router=Traffic,InterfacelPv4= Traffic,AddresslPv4=Traffic
C Transport= 1,Router=OAM,InterfacelPv4=OAM
Transport= 1,Router=OAM,InterfacelPv4=OAM,AddresslPv4=OAM
D Transport= 1,Router=OAM,InterfacelPv4=OAM,AddresslPv4=OAM
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