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_10. s_3 -> t. ~t. u_2 <-> s_3. p_10 -> q_10.
q_10 can be inferred via the modus ponens rule. ~s_3 can be inferred via the modus tollens rule. p_10 and ~t can be inferred via the conjunction rule. ~t and p_10 can be inferred via the conjunction rule. u_2 -> s_3 can be inferred via the biconditional elimination rule. s_3 -> u_2 can be inferred via the biconditional elimination rule.