单项选择题

AbisoverTDM 场景下,内置PCU 分组业务信号流正确的是()

A.GEIUB-GTNU-GDPUP-GSCU-GEPUG
B.GEIUB-GTNU-GDPUP-GTNU-GEPUG
C.GEIUB-GSCU-GDPUP-GTNU-GEPUG
D.GEIUB-GSCU-GDPUP-GSCU-GEPUG

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