A box contains four tickets lettered A, B, C, and D. Two tickets will be randomly selected from the box (without replacement). a. List all the outcomes of the sample space. List each pair in alphabetical order. A - B - - C - D - - b. What is the probability of selecting tickets A and B? Enter your answers as fractions. P (A-B) = c. What is the probability that one of the tickets will be ticket A? Enter your answers as fractions. P (A ticket) =