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. ~s_3. s_3 -> q_10. q_10 -> s_3.
~q_10 can be inferred via the modus tollens rule. t and ~s_3 can be inferred via the conjunction rule. ~s_3 and t can be inferred via the conjunction rule. s_3 <-> q_10 can be inferred via the biconditional introduction rule. q_10 <-> s_3 can be inferred via the biconditional introduction rule.