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: ~T_2(f). ~S_22(a_22). forall y: W(y) <-> T_2(y). forall x_22: R_22(x_22) <-> S_22(x_22).
~T_2(f) and ~S_22(a_22) can be inferred via the conjunction rule. ~S_22(a_22) and ~T_2(f) can be inferred via the conjunction rule. forall y: W(y) -> T_2(y) can be inferred via the universal biconditional elimination rule. forall x_22: R_22(x_22) -> S_22(x_22) can be inferred via the universal biconditional elimination rule. forall y: T_2(y) -> W(y) can be inferred via the universal biconditional elimination rule. forall x_22: S_22(x_22) -> R_22(x_22) can be inferred via the universal biconditional elimination rule.