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 x_13: P(x_13). forall x_13: P_13(x_13) -> Q_13(x_13). forall x_13: P_13(x_13).
forall x_13: Q_13(x_13) can be inferred via the universal modus ponens rule. forall x_13: P(x_13) and P_13(x_13) can be inferred via the universal conjunction rule. forall x_13: P_13(x_13) and P(x_13) can be inferred via the universal conjunction rule.