Huawei UMA products can be deployed in a logically concatenated manner. Which of the following statements is wrong about this deployment method?

Huawei UMA products can be deployed in a logically concatenated manner. Which of the following statements is wrong about this deployment method?
A . Logical mode: Person -> Slave account -> Authorization -> Master account -> Target system.
B . The primary account is the UMA account, which corresponds to the operation and maintenance personnel.
C . The slave account is the target system account. It does not need to be in one-to-one correspondence with the personnel. Ordinary operation and maintenance personnel may not feel it.
D . The user Web logs in to the UMA without installing the client on the terminal and does not change the original operating habits.

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Answer: A