In FIG illustrated  EPON  networking,  the OLT  to the network all  the ONU  (  the ONU1  to  ONUn  ) to transmit data, the following statements is correct is  ____  .( Choose one or more )

In FIG illustrated  EPON  networking,  the OLT  to the network all  the ONU  (  the ONU1  to  ONUn  ) to transmit data, the following statements is correct is  ____  .( Choose one or more )
A . Line Road  0  have all the  ONU  data
B . Line Road  1  on which all the  ONU  data
C . wire passage  2  is only to  ONU2  data
D . Line Road  0  ~  n-  downlink data is the same

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Answer:   ABD