Which of the following statements is true if and only if events

*A*and*B*are disjoint?▸

*P*(*A*∪*B*) = *P*(*A*) + *P*(*B*)

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*P*(*A*∩*B*) = *P*(*A*) ∙ *P*(*B*)

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\(\style{font-family:'Times New Roman'}{P(A\cap B)\;=\;P(A)\;\bullet\;P(A\vert B)}\)

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\(\style{font-family:'Times New Roman'}{P(B\vert A)=P(A\vert B)\;}\)