About Huawei OceanStor18000 Smart Matrix architecture, which is not correct?

About Huawei OceanStor18000 Smart Matrix architecture, which is not correct?
A . Scale-out: storage resources to expand as needed to increase the engine performance can be realized, capacity increases linearly.
B . All exchange: use PCIE 1.0 Total exchange network, to provide sufficient switching bandwidth to meet the stringent performance requirements.
C . inherent load balancing: Full live controller, balanced load sharing, improve storage resource utilization.
D . fully redundant: all component redundancy, intelligent switching component failure to meet the stringent business continuity requirements.

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Answer: B