Given：  310-025   Leading the way in IT testing and certification tools， www.testking.com   - 48 -   public class foo {   static String s；   public static void main （Stringargs） {   system.out.printIn （“s=” + s）；   }   }   What is the result？（）

• A、 The code compiles and “s=” is printed.
• B、 The code compiles and “s=null” is printed.
• C、 The code does not compile because string s is not initialized.
• D、 The code does not compile because string s cannot be referenced.
• E、 The code compiles， but a NullPointerException is thrown when toString is called.