单项选择题
Given: What is the result?（）
A.210 B.211 C.321 D.322 E.Compilation fails. F.An exception is thrown at runtime.
单项选择题 Click the Exhibit button. What is the result?（）
多项选择题 Given: Which two methods, inserted independently at line 17, correctly complete the Sales class?（）
单项选择题 Given: What is the result?（）
