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_11. ~q or u_3. q or p. ~q_11.
p or u_3 can be inferred via the resolution rule. p -> q_11 can be inferred via the biconditional elimination rule. q_11 -> p can be inferred via the biconditional elimination rule. ~p can be inferred via the biconditional elimination rule.