单项选择题
What is the result when the go() method is invoked?()
A.00 B.0001 C.000120 D.00012021 E.Compilation fails. F.An exception is thrown at runtime.
A.2 B.3 C.1,2 D.2,3 E.1,2,3
A.42 B.420 C.462 D.42042