问题：

[单选]

11. class Cup { } 
12. class PoisonCup extends Cup { } 
21. public void takeCup（Cup c） { 
22. if（c instanceof PoisonCup） { 
23. System.out.println（”Inconceivable!”）； 
24. } else if（c instanceof Cup） { 
25. System.out.println（”Dizzying intellect!”）； 
26. } else { 
27. System.exit（0）； 
28. } 
29. } 
And the execution of the statements： 
Cup cup = new PoisonCup（）；
takeCup（cup）； 
What is the output？（） 

A .  Inconceivable!
B .  Dizzying intellect!
C .  The code runs with no output.
D .  An exception is thrown at runtime.
E .  Compilation fails because of an error in line 22.