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: s_4 -> u_1. ~s. p_10 <-> s. ~u_1.
~s_4 can be inferred via the modus tollens rule. ~s and ~u_1 can be inferred via the conjunction rule. ~u_1 and ~s can be inferred via the conjunction rule. p_10 -> s can be inferred via the biconditional elimination rule. s -> p_10 can be inferred via the biconditional elimination rule. ~p_10 can be inferred via the biconditional elimination rule.