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: Jennifer is not cooking. If Jennifer plays a game, then Jennifer is cooking. Charles is rich or Jennifer is playing a game.
Jennifer is not playing a game can be inferred via the modus tollens rule. If Jennifer doesn't play a game, then Charles is rich can be inferred via the rewriting rule.