What is the effect of specifying the "ENABLE PLUGGABLE DATABASE" clause in a "CREATEDATABASE” statement?（）

A. It will create a multitenant container database (CDB) with only the root opened.

B. It will create a CDB with root opened and seed read only.

C. It will create a CDB with root and seed opened and one PDB mounted.

D. It will create a CDB that must be plugged into an existing cdb.

E. It will create a CDB with root opened and seed mounted.