If A and B are mutually exclusive, the general addition rule is:

A

$$P(A \cup B) = P(A) + P(B) + P(A \cap B)$$

B

$$P(A + B) = P(A) + P(B)$$

C

$$P(A \cap B) = 0$$

D

$$P (A \cup B) = P(A) + P(B)$$