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: p <-> q_19. forall y: U(y). ~q_19.
p -> q_19 can be inferred via the biconditional elimination rule. q_19 -> p can be inferred via the biconditional elimination rule. ~p can be inferred via the biconditional elimination rule.