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: S_3(y) -> Q(y). forall y: Q(y) <-> S_3(y). forall y: Q(y) -> S_3(y).
forall y: S_3(y) <-> Q(y) can be inferred via the universal biconditional introduction rule. forall y: Q(y) <-> S_3(y) can be inferred via the universal biconditional introduction rule. forall y: Q(y) -> S_3(y) can be inferred via the universal biconditional elimination rule. forall y: S_3(y) -> Q(y) can be inferred via the universal biconditional elimination rule.