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多項(xiàng)選擇題

Given:

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; }

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