Which of the Following Statements Is True in General (I

Multiple Choice

Which of the following statements is true in general (i.e., always true for all situations) ?

A) P(A∪B) = P(A) + P(B)
B) P(A∩B) = P(A) · P(B)
C) P(B∩A) = P(A) · P(B|A)
D) P(B|A) = P(A|B)