What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: Karen is not playing a game. It is cold if and only if Karen is playing a game.
If it is cold, then Karen is playing a game can be inferred via the biconditional elimination rule. If Karen plays a game, then it is cold can be inferred via the biconditional elimination rule. It is not cold can be inferred via the biconditional elimination rule.