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_2: R(y_2) <-> W(y_2). forall y_2: W(y_2) -> S_1(y_2). forall y_2: S_1(y_2) -> P(y_2).
forall y_2: W(y_2) -> P(y_2) can be inferred via the universal transitivity rule. forall y_2: R(y_2) -> W(y_2) can be inferred via the universal biconditional elimination rule. forall y_2: W(y_2) -> R(y_2) can be inferred via the universal biconditional elimination rule.