7. Which of the following statements is / are TRUE? I. A tree diagram is the graphical representation of a probability distribution. II. A mathematical game is fair if a player expects to win the same amount they pay to play the game. III. The height of every rectangle in a probability histogram in this class will never be more than 1. IV. The sample space consisting of the possible sums of the dice when two fair standard four-sided dice are rolled is uni- form. V. In the Venn diagram to the right, the event (AC U B) is represented by shading regions 32,31, and z. (a) All of these statements are true. (b) II, III, and V only (c) III only (d) III, IV, and V only (e) II, IV, and V only