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: T_3(x) -> Q(x). forall x: Q(x) -> T_3(x). exists x: T_3(x) -> ~W(x). forall x: W(x).
exists x: ~T_3(x) can be inferred via the existential modus tollens rule. forall x: T_3(x) <-> Q(x) can be inferred via the universal biconditional introduction rule. forall x: Q(x) <-> T_3(x) can be inferred via the universal biconditional introduction rule.