What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x, x will play a game or x will not work. For all x, x will work if and only if x will play a game.
For all x, if x works, then x is playing a game. For all x, if x works, then x is playing a game. For all x, if x plays a game, then x is working.