What are players’ strategies? A. player 1’s strategies are: a, b; player 2’s strategies are x, y B. player 1’s strategies are: aa, ab, ba, bb; player 2’s strategies are x, y C. Player 1’s strategies are: a, b; player 2’s strategies are xx, xy, yx, yy D. player 1’s strategies are: aa, ab, ba, bb; player 2’s strategies are xx, xy, yx, yy