Which three statements are true about System Global Area (SGA)?

A.
SGA contains shared memory structures for all Oracle processes running on a single server.

B.
Each server process has its own SGA.

C.
SGA is allocated automatically when a database is started.

D.
SGA is used to speed up queries by caching data blocks, program data, information about
database objects, and query results

E.
SGA is allocated automatically when a database is mounted.

F.
SGA is read and written by server and background processes.