Click the Exhibit button. 
 What is the result？（）

单项选择题Given：  Which code， inserted at line 15， creates an instance of the Point class defined in Line？（）

A. Line l = new Line（） ； l.Point p = new l.Point（）；
B. Line.Point p = new Line.Point（）；
C. The Point class cannot be instatiated at line 15.
D. Point p = new Point（）；

单项选择题Given：   11. public static void main（String[] args） {   12. Object obj = new int[] { 1， 2， 3 }；   13. int[] someArray = （int[]）obj；   14. for （int i ： someArray） System.out.print（i +    ）；   15. }   What is the result？ （）

A. Compilation fails because of an error in line 13.
B. A ClassCastException is thrown at runtime.
C. 1 2 3
D. Compilation fails because of an error in line 14.
E. Compilation fails because of an error in line 12.

多项选择题Given： 10. interface Jumper { public void jump（）； } ...   20. class Animal {} ...   30. class Dog extends Animal {   31. Tail tail；   32. }   ...   40. class Beagle extends Dog implements Jumper{   41. public void jump（） {}  42. }   ...   50. class Cat implements Jumper{   51. public void jump（） {}   52. }. Which three are true？（）

A. Cat is-a Jumper
B. Cat is-a Animal
C. Dog is-a Jumper
D. Dog is-a Animal
E. Beagle has-a Jumper
F. Cat has-a Animal
G. Beagle has-a Tail

多项选择题Click the Exhibit button.   Given： Which two statements are true if a NullPointerException is thrown on line 3 of class C？（）

A. The application will crash.
B. The code on line 29 will be executed.
C. The code on line 5 of class A will execute.
D. The exception will be propagated back to line 27.
E. The code on line 5 of class B will execute.

单项选择题Given： What is the result？ （）

A. A new Item object is created with the preferred value in the id attribute.
B. The attribute id in the Item object is modified to the new value.
C. Compilation fails.
D. An exception is thrown at runtime.
E. The attribute id in the Item object remains unchanged.