Which three are true about an application seed pluggable database (PDB)? (Choose three.)

[answerhappygod]

Which three are true about an application seed pluggable database (PDB)? (Choose three.)

A. It is automatically synchronized with its application root PDB when an application is upgraded.
B. It cannot be added to an application container after the application container has already been created.
C. A new application PDB created by cloning an application seed PDB can have an old version of the application installed after cloning completes.
D. It is automatically synchronized with its application root PDB when an application is installed. E. It cannot be dropped from its application container. F. A new application PDB created by cloning an application seed PDB can have an up-to-date version of the application installed after cloning completes. G. It is not required in an application container.