He hung is hat on the barrel of his gun.

B is the safest. Taking exist A might gurantee your saftey but not your friend as it will probaby fall under your weight. On the other hand the lion have been starved for two months which probably means they are dead.

They take the psycho path.

In the back. See, the train is still accelerating as it is leaving the station so the train will be moving faster when the back of the train enters the tunnel.

A deck of cards.