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【单选题】
析法分离物质的基本原理是A.
利用各物质的理化性质差异，以不同程度分布在两个相中，从而使各物质以不同速度移动而达到分离
B.
利用各物质的溶解度不同，从而使各物质以不同速度移动而分离
C.
利用各物质的比重不同，从而使各物质以不同速度移动而分离
D.
利用各物质的电荷不同，从而使各物质以不同速度移动而分离
E.
利用各物质的分子量不同，从而使各物质以不同速度移动而分离
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