Which three statements regarding the server parameter file （SPFILE） are true（）

AAn SPFILE is a binary file.

BAn SPFILE cannot reside on a client.

CAn SPFILE cannot contain static parameters.

DAn SPFILE can store changes persistently across instance restarts.

EAn SPFILE can be read by the database server， but it is not written to by the server.

FAn SPFILE must be created manually， before creating a database， even if you use the DatabaseConfiguration Assistant （DBCA） to create the database.