Which of the Following About WushanFS Global Cache Technology Employed

Which of the following about WushanFS global cache technology employed by Huawei OceanStor 9000 is false?

A) WushanFS global cache enables the memory spaces on all storage servers to logically form a unified memory resource pool.
B) Data cached on a node cannot be hit by the read/write service of another node.
C) Global cache helps improve the sharing of memory resources among nodes.
D) The WushanFS uses a distributed lock mechanism to implement global management of cached data. The same service data is cached only on one node. Another node that needs to access the service data can apply for a lock to obtain the cached data.