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: Q(y) and R(y). forall y: U_2(y) -> U(y). forall y: U_2(y).
forall y: U(y) can be inferred via the universal modus ponens rule. forall y: Q(y) can be inferred via the universal simplification rule. forall y: R(y) can be inferred via the universal simplification rule.