Let A denote the event that the next request for assistance from a statistical software consultant relates to the SPSS package, and let B be the event that the next request is for help with SAS. Suppose that PA) = 0.30 and P(B) = 0.60. (There are various packages such as Minitab, SPSS, SAS, JMP, and R) (1) Why is it not the case that P(A) P(B) 1? O The probabilities do add to 1?a. The probabilities should add to 1; P(A) or P(8) must be recorded incorrectly. b. The probabilities do not add to 1 because there are other software packages for which requests could be made. c. The probabilities do not add to 1 because they are independent events. d. The probabilities are not mutually exclusive and thus they do not need to add to 1