Which two statements are true?

You administer a three-instance, policy-managed, multitenant RAC database CDB1 with three PDBs: PDB_1,
PDB_2, and PDB_3.
You want to drop PDB_3.
Which two statements are true? (Choose two.)

A.
PDB_3 must be closed on all CDB1 instances.

B.
Manually created services for PDB_3 are not removed automatically from the OCR when dropping PDB_3.

C.
CDB1 must be open in restricted mode on all cluster nodes.

D.
PDB_3 must be open READ ONLY in all CDB1 instances.

E.
Manually created services for PDB_3 are removed automatically from the OCR when dropping PDB_3.