1. public class A {  2.  3. private int counter = 0；  4.  5. public static int getInstanceCount（） {  6. return counter；  7. }  8.  9. public A（） {  10. counter++；  11. }  12.  13. }  Given this code from Class B：  25.A a1 =new A（）；  26. A a2 =new A（）；  27. A a3 =new A（）；  28. System.out.printIn（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、 A runtime error occurs when line 25 executes.
• E、 Compilation fails because of an error on line 28.