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【单选题】
设P(A)=0.8，P(B)=0.7，P(A/B)=0.8，则下列结论正确的是( )A.
事件A与B相互独立
B.
事件A与B互斥
C.
D.
P(B∪A)=P(B)+P(A)P(B|A)=P(B)
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