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 x: P(x) -> T(x). exists x: T(x) or ~P(x). forall x: T(x) -> P(x).
exists x: P(x) -> T(x) can be inferred via the existential rewriting rule. forall x: P(x) <-> T(x) can be inferred via the universal biconditional introduction rule. forall x: T(x) <-> P(x) can be inferred via the universal biconditional introduction rule.