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【多选题】
物体A、B都静止在同一水平面上，它们的质量分别为M A 、M B ，与水平面间的动摩擦因数分别为μ A 、μ B ，平行于水平面的拉力F分别拉物体A、B，测得加速度a与拉力F的关系图象如图中A、B所示，则（）A.
μ A >μ B
B.
μ A B
C.
M A >M B
D.
M A B
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C.
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