( 6 ) ( a ) Find the PPSE ( perfect bure-strategy Nash ( equilibrium ) of the extensive form game below, where C denotes a move of chance (0, 1, 8 ) (1 , 0, 3) d (10, 0, 10 ) a 2 3 h (5 , 1, 3) e i (1 , 2 , 6 ) f - ( 2 , 9, 4 ) (0, 4, 10 ) NOTATION : ( x , 4, 2 ) means the payoff of players 1, 2, 3 is x, y, z repectively