Regarding the planning of AD, which of the following descriptions is incorrect?

A large multinational company’s IT system needs to use AD.

Regarding the planning of AD, which of the following descriptions is incorrect?
A . Within each subdomain and between different departments, different users and devices can be managed separately by setting different 0Us.
B . According to the different regions of the department, establish different sub-domains, but there should be as few sub-domains as possible.
C . There is no need to synchronize user data between different subdomains.
D . Adopt multi-domain deployment, different regions have different sub-domain strategies, management, maintenance, and deployment are more complicated than a single domain.

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Answer: C