Click the Exhibit button. 
 Given：

Which two statements are true if a NullPointerException is thrown on line 3 of class C？（）

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.

单项选择题Given： What is the result？（）

A. An exception is thrown at runtime.
B. int Long
C. Compilation fails.
D. Short Long

单项选择题Given： Which statement is true？（）

A. The cardID and limit variables break polymorphism.
B. The code demonstrates polymorphism.
C. The ownerName variable breaks encapsulation.
D. The setCardInformation method breaks encapsulation.
E. The class is fully encapsulated.

单项选择题Click the Exhibit button.   Given this code from Class B：   25. A a1 = new A（）；   26. A a2 = new A（）；   27. A a3 = new A（）；   28. System.out.println（A.getInstanceCount（））；   What is the result？（）

A. Compilation of class A fails.
B. Line 28 prints the value 3 to System.out.
C. Line 28 prints the value 1 to System.out.
D. Compilation fails because of an error on line 28.
E. A runtime error occurs when line 25 executes.

多项选择题Which two code fragments correctly create and initialize a static array of int elements？（）

A.A
B.B
C.C
D.D