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: T(y) -> U_2(y). forall y: U_2(y) -> Q_4(y). forall y: ~U_2(y). forall y: Q_4(y) -> T(y).
forall y: ~T(y) can be inferred via the universal modus tollens rule. forall y: T(y) -> Q_4(y) can be inferred via the universal transitivity rule. forall y: U_2(y) -> T(y) can be inferred via the universal transitivity rule. forall y: Q_4(y) -> U_2(y) can be inferred via the universal transitivity rule.