public class ExceptionTest {   class TestException extends Exception {}   public void runTest （） throws TestException {}   public void test （） /* Point X*/ {   runTest （）；   }   }   At point X on line 4， which code can be added to make the code compile？（）  

• A、 Throws Exception.
• B、 Catch （Exception e）.
• C、 Throws RuntimeException.
• D、 Catch （TestException e）.
• E、 No code is necessary.