使用自动填充方法输入数据时，若在A1输入2，A2输入4，然后选中A1：A2区域，再拖动填充柄至A10，则A1：A10区域内各单元格填充的数据为（）。
A、2，4，6，„，20
B、全0
C、全2
D、全4

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