What is the result？（）

A.Value is： 8
B.Compilation fails.
C.Value is： 12
D.Value is： -12
E.The code runs with no output.
F.An exception is thrown at runtime.

A.An exception is thrown at runtime.
B.Compilation fails because of an error in line 7.
C.Compilation fails because of an error in line 4.
D.Compilation succeeds and no runtime errors with class A occur.

A.13
B.134
C.1234
D.2134
E.2143
F.4321