Which statement is true about Enterprise Manager (EM) express in Oracle Database 12c?（）

• A、By default, EM express is available for a database after database creation.
• B、You can use EM express to manage multiple databases running on the same server.
• C、You can perform basic administrative tasks for pluggable databases by using the EM express interface.
• D、You cannot start up or shut down a database Instance by using EM express.
• E、You can create and configure pluggable databases by using EM express.