When you start up a CDB, which operations are performed automatically and in what order?

When you start up a CDB, which operations are performed automatically and in what order?

a - The instance is started.

b - Control files are opened.

c - The root container is opened (redo logs and root data files).

d - Seed pluggable database is in READ ONLY mode.

e - Other PDBs are still in MOUNTED mode.

f - Triggers may fire if they exist to open other PDBs.