What is the result？（）

• A、 The code compiles and “s=” is printed.
• B、 The code compiles and “s=” + s）；
• C、 The code does not compile because Strings is not initialized.
• D、 The code does not compile because Strings cannot be referneed.
• E、 The code comiles， but a NullPointer Exception is thrown when toString is called.