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: ~W(y). t_1 -> R_3(a_5). forall y: W(y) -> R_3(y). forall y: R_3(y) -> W(y).
forall y: ~R_3(y) can be inferred via the universal modus tollens rule. forall y: W(y) <-> R_3(y) can be inferred via the universal biconditional introduction rule. forall y: R_3(y) <-> W(y) can be inferred via the universal biconditional introduction rule.