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【单选题】
设关系模式R(ABC)上成立的函数依赖集F为{B→C，C →A},p={AB,AC}为R的一个分解，那么分解p_______________。
A.
保持函数依赖
B.
丢失了B→C
C.
丢失了C→A
D.
是否保持函数依赖由R的当前值确定
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