Q84. PDB1 and PDB2 are pluggable databases in CDB1

Q84. PDB1 and PDB2 are pluggable databases in CDB1.
Examine these commands:
$ export ORACLE_SID=CDB1
$ sqlplus / as sysdba
SQL> STARTUP
…
Database opened.
SQL> SHOW PDBS
CON_ID CON_NAME OPEN MODE RESTRICTED
—— ———– ———- ———-
2 PDB$SEED READ ONLY NO
3 PDB1 MOUNTED
4 PDB2 MOUNTED
SQL> ALTER PLUGGABLE DATABASE pdb1 OPEN;
Pluggable database altered.
SQL> ALTER PLUGGABLE DATABASE pdb1 SAVE STATE;
Pluggable database altered.
SQL> ALTER PLUGGABLE DATABASE pdb1 CLOSE;
Pluggable database altered.
SQL> ALTER PLUGGABLE DATABASE pdb2 OPEN;
Pluggable database altered.
CDB1 is then restarted.

Which three are true?

• A. PDB$SEED will be opened READ ONLY.
• B. PDB$SEED will be MOUNTED.
• C. PDB1 will be MOUNTED.
• D. PDB2 will be MOUNTED.
• E. PDB2 will be opened READ WRITE.
• F. PDB1 will be opened READ WRITE.