Kyle and Stan Are Playing Odds or Evens, Where Kyle

Kyle and Stan are playing Odds or Evens, where Kyle is designated as the "odd"player and Stan is designated as the "even"player. They decide to play the game 10 times. If Kyle changes from a pure strategy of "shoot 2"and decides to "shoot 1"in two of the games, Stan would be best off if he

A) stuck with a pure strategy of "shoot 2."
B) switched to a pure strategy of "shoot 1."
C) stuck with a mixed strategy of "shoot 1" 50% of the time and "shoot 2" 50% of the time.
D) switched to a mixed strategy of "shoot 1" more than 50% of the time and "shoot 2" less than 50% of the time.