Which three statements regarding collection of database usage metrics are correct?

Which three statements regarding collection of database usage metrics are correct? (Choose three.)

A.
The metrics survive database reboots and crashes.

B.
The MMON process tracks and records the database usage metrics.

C.
The MMAN process tracks and records the database usage statistics.

D.
The Oracle Enterprise Manager (OEM) repository is used to store metrics.

E.
The SMON process tracks and records the database usage metrics once a month.

F.
The SYSAUX tablespace contains table, where the database usage metrics are physically stored.

G.
The SYSTEM tablespace by default contains tables where the database usage metrics and physically stored.