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: P_2(z) -> U(z). forall z: U(z) -> P(z). forall z: P_2(z) -> U(z). forall z: P(z) -> P_2(z).
forall z: P_2(z) -> P(z) can be inferred via the universal transitivity rule. forall z: U(z) -> P_2(z) can be inferred via the universal transitivity rule. forall z: P_2(z) -> P(z) can be inferred via the universal transitivity rule. forall z: P(z) -> U(z) can be inferred via the universal transitivity rule. forall z: P(z) -> U(z) can be inferred via the universal transitivity rule.