Me! 2. what must be true in order for p (a or b) = p(a) + p (b)? (1 point) a. a and b cannot be disjoint. b. a and b must be independent. c. a and b cannot be independent. d. a and b must be disjoint. e. it is always true. 3. what must be true for p (a and b) = p (a) • p (b)? (1 point) a. a and b cannot be independent. b. a and b must be disjoint. c. a and b must be independent. d. a and b cannot be disjoint. e. it is always true.