The following statement about the OSI reference model is correct ______ .

 The following statement about the OSI reference model is correct ______ .
A .  The data at the transport layer is called a frame ( Frame )
B .  The data at the network layer is called a segment .
C .  data link layer called packets ( Packet )
D .  The data in the physical layer is called bit ( Bit )

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Answer:   D