If AAA and BBB are independent events, which of the following is always true?
P(A∣B)=P(A)P(A|B) = P(A)P(A∣B)=P(A)
P(A∩B)=P(A)+P(B)P(A \cap B) = P(A) + P(B)P(A∩B)=P(A)+P(B)
P(A∣B)=P(B)P(A|B) = P(B)P(A∣B)=P(B)
P(A∪B)=P(A)P(B)P(A \cup B) = P(A)P(B)P(A∪B)=P(A)P(B)