Given P(A)=0.2P(A) = 0.2P(A)=0.2 and P(A∣B)=0.2P(A|B) = 0.2P(A∣B)=0.2, which statement is definitely true?
AAA and BBB are independent
AAA and BBB are mutually exclusive
P(B∣A)=0.2P(B|A) = 0.2P(B∣A)=0.2
P(A∪B)=P(B)P(A \cup B) = P(B)P(A∪B)=P(B)