If P(A)=0.5P(A) = 0.5P(A)=0.5 and P(A∣B)=0.5P(A|B) = 0.5P(A∣B)=0.5, which of the following is definitively true?
AAA and BBB are independent
AAA and BBB are mutually exclusive
P(B)=0.5P(B) = 0.5P(B)=0.5
P(A∩B)=0.25P(A \cap B) = 0.25P(A∩B)=0.25