Which of the following statements is wrong about cloud computing architectures and traditional IT architectures?

Which of the following statements is wrong about cloud computing architectures and traditional IT architectures?
A . Traditional IT relies on hardware reliability to achieve high system availability by eliminating single points of failure through the infrastructure.
B . Compared with traditional IT architecture, cloud computing architecture does not require high reliability of hardware.
C . Traditional IT adopts Scale-up, which expands or increases the number of servers per device module.
D . The traditional IT architecture uses server clusters, while the cloud computing architecture uses data marts.

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Answer: D