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_16 <-> t_2. ~p_16. ~r. r or t_3.
t_3 can be inferred via the disjunctive syllogism rule. ~p_16 and ~r can be inferred via the conjunction rule. ~r and ~p_16 can be inferred via the conjunction rule. p_16 -> t_2 can be inferred via the biconditional elimination rule. t_2 -> p_16 can be inferred via the biconditional elimination rule. ~t_2 can be inferred via the biconditional elimination rule.