单选题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.
单选题
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.
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