The Addition Rule Says That P(A or B)= P(A)+ P(B)

Multiple Choice

The Addition Rule says that P(A or B) = P(A) + P(B) .What must be true about events A and B for this rule to apply?

A) The events must be disjoint.
B) The events must be independent.
C) The events must be mutually exclusive.
D) Two of the above