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单项选择题 11. class Person {  12. String name = “No name‟；  13. public Person（String nm） { name = nm； }  14. }  15.  16. class Employee extends Person {  17. String emplD = “0000”；  18. public Employee（String id） { empID = id； }  19. }  20.  21. public class EmployeeTest {  22. public static void main（String[] args） {  23. Employee e = new Employee（”4321”）；  24. System.out.println（e.empID）；  25. }  26. }  What is the result？（） 

A、 4321

B、 0000

C、 An exception is thrown at runtime.

D、 Compilation fails because of an error in line 18.

  • D

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