Which three values can be specified for the SCOPE clause?

You decided to increase the value for the SHARED_SERVERS parameter by using the
following command: SQL> ALTER SYSTEM SET SHARED_SERVERS=3 SCOPE=?;
Which three values can be specified for the SCOPE clause? (Choose three.)

A.
INSTANCE

B.
MEMORY

C.
SPFILE

D.
NONE

E.
BOTH

F.
ALL

G.
PFILE