Which of the following statements about computer systems are wrong?

Which of the following statements about computer systems are wrong?
A . The computer system is built on the underlying hardware, and the common forms of servers include tower, blade, rack, etc.
B . Computer software can be divided into system software at the bottom layer, application software at the upper layer and middleware between the two
C . Minicomputers, mainframes use "host-terminal" operation
D . The rise of the common X86 architecture server originates from mainframes, which belong to CISC complex instructions

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Answer: D