Identify three valid methods of opening, pluggable databases (PDBs).

A.
ALTER PLUGGABLE DATABASE PDB OPEN issued from the seed

B.
ALTER PLUGGABLE DATABASE OPEN ALL ISSUED from the root

C.
ALTER DATABASE PDB OPEN issued from the root

D.
ALTER DATABASE OPEN issued from that PDB

E.
ALTER PLUGGABLE DATABASE PDB OPEN issued from another PDB

F.
ALTER PLUGGABLE DATABASE OPEN issued from that PDB

G.
ALTER PLUGGABLE DATABASE OPEN ALL ISSUED from the root