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2. Consider a game in which two players, each has to choose a non-negative integer, that is, anything from {0, 1, 2, ....}. If both players choose the same number, they each get that number in dollars. Otherwise, the player who chooses the higher number gets the lower number plus $1. And the person who chooses the lower number gets the lower number. (a) Describe all the Nash equilibria in this game. (b) Suppose now the rules remain as above, excepting in the case where one person chooses a number less than or equal to 10 and the other chooses a number greater than 10. Then they both get 0. Describe all the Nash equilibria of this game