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【单选题】
如图所示是一带电粒子在云雾室中的运动径迹图，云雾处于垂直于纸面向内的磁场中。当粒子穿过水平放置的铝箔后，继续在磁场中运动，考虑到粒子穿过铝箔后有动能损失，则由此可判断 【图片】A.
粒子带负电，且沿 运动
B.
粒子带正电，且沿 运动
C.
粒子带负电，且沿 运动
D.
粒子带正电，且沿 运动
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