Players 1 and 2 must decide whether or not to carry an umbrella when leaving home. Each player's payoff is -5 if he does not carry an umbrella and it rains, -2 if he carries an umbrella and it rains, -1 if he carries an umbrella and it is sunny, and 1 if he does not carry an umbrella and it is sunny. Player 1 learns the weather before leaving home; player 2 doe snot, but he can observe player 1's action before choosing his own.

(a) Give the extensive and strategic forms of the game.

(b) Is it dominance solvable?