多项选择题
Which two methods, inserted independently at line 17, correctly complete the Sales class?()
A.double getSalesAmount() { return 1230.45; } B.public double getSalesAmount() { return 1230.45; } C.private double getSalesAmount() { return 1230.45; } D.protected double getSalesAmount() { return 1230.45; }
多项选择题 Which two are true?()
多项选择题 Which three are valid?()
单项选择题 What is the result?()