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_2: W(x_2). forall x_2: T(x_2) -> ~W(x_2). forall x_2: T(x_2) <-> P_3(x_2).
forall x_2: ~T(x_2) can be inferred via the universal modus tollens rule. forall x_2: T(x_2) -> P_3(x_2) can be inferred via the universal biconditional elimination rule. forall x_2: P_3(x_2) -> T(x_2) can be inferred via the universal biconditional elimination rule.