Which of the following statements best describes the theory of runs?
a) If a stock gained yesterday, it will do so again in the next trading session.
b) If a stock gained yesterday, there is a greater than 50% chance it will do the opposite in the next trading session.
c) If a stock gained yesterday, it is equally likely to gain or lose in the next trading session.
d) If a stock gained yesterday, it will continue to gain momentum in the next trading session.