When are two events, A and B, mutually exclusive? Check all that apply.

A. when they have no outcomes in common
B. when they are independent
C. when P(A or B) = P(A) + P(B)
D. when P(A or B) ≠ P(A) + P(B)
E. when knowing that A has or has not already occurred does not change the probability that B will occur
F. when P(A and B) = P(A) ⸱ P(B)

ANSWER IS A & C