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 z: W(z) -> P_3(z). forall z: P_3(z) -> W(z). forall z: W(z) or ~P_3(z).
forall z: P_3(z) -> W(z) can be inferred via the universal rewriting rule. forall z: W(z) <-> P_3(z) can be inferred via the universal biconditional introduction rule. forall z: P_3(z) <-> W(z) can be inferred via the universal biconditional introduction rule.