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_9: R_3(x_9) -> T_2(x_9). forall x_9: T_2(x_9) -> R_3(x_9). forall x_9: Q_5(x_9) -> R_5(x_9). forall x_9: R_3(x_9) -> Q_5(x_9).
forall x_9: T_2(x_9) -> Q_5(x_9) can be inferred via the universal transitivity rule. forall x_9: R_3(x_9) -> R_5(x_9) can be inferred via the universal transitivity rule. forall x_9: R_3(x_9) <-> T_2(x_9) can be inferred via the universal biconditional introduction rule. forall x_9: T_2(x_9) <-> R_3(x_9) can be inferred via the universal biconditional introduction rule.