Which three statements are true about a database instance that has mounted a database but has not opened
it?
A.
System administrators and users with the CREATE SESSION system privilege may connect to the instance.
B.
Data files are open in read-only mode.
C.
A control file is open.
D.
System Global Area (SGA) is allocated and background processes are started.
E.
An alert log and trace files are open.
F.
Instance recovery is performed for the database.