Which of the following descriptions about the hierarchical structure of domain names is wrong?

Question

Options

• AA second-level domain name, such as "abc.example.com", is a subdomain of a first-level domain.
• BTop-level domains are distinguished by the domain name suffix. For example, ".com" is a common
• CThe primary domain name, such as "example.com", is a subdomain of the top-level domain and
• DThe root domain is ".", which is the highest level domain name and is usually omitted when used.

• A
  76% (37)
• B
  16% (8)
• C
  2% (1)
• D
  6% (3)

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