已知2Fe2＋ ＋Br2＝2Fe3＋＋2Br－，向10 mL0．1 mol·L－1的FeBr2溶液中通入0．001 mol Cl2，反应后的溶液中，除含有Cl－外还一定
| A．含Fe2＋，不含Fe3＋ | B．含Fe3＋，不含Br－ |
| C．含Fe3＋，含Br－ | D．含Fe2＋，含Fe3＋ |
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