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[单选]

Which of the following is WRONG about the comparison between the early version and the current version of Ethernet().

A、The destination and source addresses have been overleapt in the current Ethernet versions.

B、A switched full duplex system can offer higher performance than the CSMA/CD scheme used by the early Ethernet.

C、The original address fields in the experimental Ethernet have been changed in the current versions.

D、The running speed of the current Ethernet is 100 times and beyond as fast as that of the early versions.

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请帮忙给出正确答案和分析，谢谢！

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