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.
