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: R(d) -> q. forall x_2: ~T(x_2). forall x_2: P(x_2) <-> T(x_2). forall x_2: P(x_2) or R(x_2).
forall x_2: P(x_2) -> T(x_2) can be inferred via the universal biconditional elimination rule. forall x_2: T(x_2) -> P(x_2) can be inferred via the universal biconditional elimination rule. forall x_2: ~P(x_2) can be inferred via the universal biconditional elimination rule.