Which of the following descriptions of DNS is incorrect?

Which of the following descriptions of DNS is incorrect?
A . On the Internet, the correspondence between domain names and IP addresses can be one-to-one or many-to-one. No matter what kind of correspondence, DNS can be resolved.
B . The domain controller will register its host name, IP address and role played in the DNS service period so that other computers can find this pre-controller through the DNS server.
C . DNS reverse resolution requires the establishment of a reverse lookup zone to resolve IP addresses into domain names.
D . DNS provides services for converting between domain names and IP addresses.

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Answer: A