Suppose that the daily price of each share of X stock is a random walk with each day's movement in price independent of the previous day's price change. Every day, the stock can either go up or down by $3, each with 50% probability. The stock is currently valued at $60. What is the probability that the value of the stock two days from now will be exactly $60? Select one: a. 50% b. 100% c. 0% d. 25% e. 75%