根据下列反应（1）Cl2+ 2KBr==2KCl+ Br2，（2）Br2 + 2KI==2KBr +I2，判断单质的氧化性由强到弱的顺序是（ ）
| A．Br2> I2> Cl2 | B．Cl2> Br2> I2 | C．Cl2> I2> Br2 | D．Br2> Cl2> I2 |
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