单项选择题
Click the Exhibit button. What is the result？（）
A.4321 B.0000 C.An exception is thrown at runtime. D.Compilation fails because of an error in line 18.
单项选择题 Click the Exhibit button. Which statement is true about the classes and interfaces in the exhibit？（）
单项选择题 Given： Which code， inserted at line 14， allows the Sprite class to compile？（）
单项选择题 Given： What is the result？（）
