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_1: W(y_1) -> Q_3(y_1). forall y_1: Q_3(y_1) -> W(y_1). forall y_1: Q_3(y_1) -> W(y_1).
forall y_1: W(y_1) <-> Q_3(y_1) can be inferred via the universal biconditional introduction rule. forall y_1: W(y_1) <-> Q_3(y_1) can be inferred via the universal biconditional introduction rule. forall y_1: Q_3(y_1) <-> W(y_1) can be inferred via the universal biconditional introduction rule. forall y_1: Q_3(y_1) <-> W(y_1) can be inferred via the universal biconditional introduction rule.