public class test {   public static void add3 （Integer i）{  int val = i.intValue （ ）；   val += 3；   i = new Integer （val）；    }     public static void main （String args [ ] ）  { Integer i = new Integer （0）；    add3 （i）；   system.out.printIn （i.intValue （ ） ）；   }    }   What is the result？（）

• A、 Compilation will fail.
• B、 The program prints “0”.
• C、 The program prints “3”.
• D、 Compilation will succeed but an exception will be thrown at line 3.