第46題Given:10. public class Pizza{11. ArrayList toppings;12.13. public final void addTopping(String topping){14. toppings.add(topping);15. }16.17. public void removeTopping(String topping){18. toppings.remove(topping);19. }20. }And:30. class PepperoniPizza extends Pizza{31. public void addTopping(String topping){32. System.out.println("Cannot add Toppings");33. }34.35. public void removeTopping(String topping){36. System.out.println("Cannot remove pepperoni");37. }38. }And:50. Pizza pizza = new PepperoniPizza();SCJP 6.0 認證教戰手冊 黃彬華著 碁峰出版2551. pizza.addTopping("Mushrooms");52. pizza.removeTopping("Pepperoni");What is the result?
(A) Compilation fails.
(B) Cannot add Toppings
(C) The code runs with no output.
(D) A NullPointerException is thrown in Line 4.