3. Consider a setting in which player 1 moves rst by choosing among three acljons: a, h, and c. After observing the choice of player 1, player 2 chooses among two actions: 1' and 3:. Consider the following three 1I.u'a.riants as to what player 3 can do and what she knows when she moves: a. If player I chose a, then player 3 selects among two actions: high and low. Player 3 knows player 2's choice when she moves. Write clown the extensive form of this setting. [You can ignore payoffs.) b. If player I chose a, then player 3 selects among two actions: high and low. Player 3 does not know player 2's choice when she moves. Write down the extensive form of this setting. {You can ignore payoffs.) c. If player i chose either :1 or b, then player 3 selects among two actions: high and low. Player 3 observes the choice of player 2, but not that of player 1. Write down the extensive form of this setting. {You can ignore payoffs]