Which two are true？（）

• A、A finalizer may NOT be invoked explicitly.
• B、The finalize method declared in class Object takes no action.
• C、super.finalize（）is called implicitly by any over riding finalize method.
• D、The finalize method for a given objec twill be called no more than once by the garbage collector.
• E、The order in which finalize will be called on two objects is based on the order in which the two objects became finalizable.