Four political candidates are deciding whether or not to enter a race for an elected office where the decision depends on who else is throwing his or her hat into the ring. Suppose candidate A prefers not to enter if candidate B is expected to enter; otherwise, A prefers to enter. Candidate B prefers not to enter if she expects either candidate A and/or candidate D to enter; other-wise, she prefers to enter. Candidate C prefers not to enter if he expects candidate A to enter and prefers to enter in all other cases. Candidate D prefers not to enter if either candidate B and/or C are expected to enter; otherwise, she prefers to enter. If we assume that their choices are consistent with Nash equilibrium, who will enter the race?