设 A、 B、C为随机事件，则()。 A.P(A-B- C)=P (A)-P(A B)-P(A C)-P(B C)+P(AB C) B.P(A-B- C)=P (A)-P(A B)-P(A C)+P(AB C) C.P(A-B- C)=P (A)-P(A B)-P(B C)+P(AB C) D.P(A-B- C)=P
A.-P(A
B.-P(B
C.+P(AB
正确答案是B