Which two statements about an authoritative server in a DNS system are true? (Choose two.)

A.
It indicates that it is authoritative for a name by setting the AA bit in responses.

B.
It has a direct connection to one of the root name servers.

C.
It has a ratio of exactly one authoritative name server per domain.

D.
It cannot cache or respond to queries from domains outside its authority.

E.
It has a ratio of at least one authoritative name server per domain.

Explanation: