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Which two pairings match the application with the correct Cos value？（）

  • A、CoS 0 = Best-Effort Data
  • B、CoS 1 = Best-Effort Data
  • C、CoS 3 = High Priority
  • D、CoS 4 = High Priority Data
  • E、CoS 5 = Voice Bearer
  • F、CoS 7 = Voice Bearer

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