Class TestException  1. public class TestException extends Exception {  2. } Class a：  1. public class a {  2.  3. public String sayHello（String name） throws TestException {  4.  5. if（name == null） {  6. throw new TestException（）；  7. }  8.  9. return “Hello “+ name；  10. }  11.  12. }  A programmer wants to use this code in an application： 45. A a=new A（）；  46. System.out.println（a.sayHello（”John”））；  Which two are true？（）

• A、 Class a will not compile.
• B、 Line 46 can throw the unchecked exception TestException.
• C、 Line 45 can throw the unchecked exception TestException.
• D、 Line 46 will compile if the enclosing method throws a TestException.
• E、 Line 46 will compile if enclosed in a try block， where TestException is caught.