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: S_3(c_1) -> T_1(c_1). forall x: T_1(x) -> S_3(x). forall x: S_3(x) -> T_1(x).
forall x: T_1(x) <-> S_3(x) can be inferred via the universal biconditional introduction rule. forall x: S_3(x) <-> T_1(x) can be inferred via the universal biconditional introduction rule.