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: forall y: R(y) -> S_4(y). forall y: W(y) -> R(y). forall y: S_4(y) -> W(y). forall y: ~R(y).
forall y: ~W(y) can be inferred via the universal modus tollens rule. forall y: R(y) -> W(y) can be inferred via the universal transitivity rule. forall y: W(y) -> S_4(y) can be inferred via the universal transitivity rule. forall y: S_4(y) -> R(y) can be inferred via the universal transitivity rule.