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: t -> q_11. p_2 -> q_2. ~q_2. ~q_11.
~t can be inferred via the modus tollens rule. ~p_2 can be inferred via the modus tollens rule. ~q_2 and ~q_11 can be inferred via the conjunction rule. ~q_11 and ~q_2 can be inferred via the conjunction rule.