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 or ~p_4. p_10 <-> p_4.
p_4 -> p_10 can be inferred via the rewriting rule. p_10 -> p_4 can be inferred via the biconditional elimination rule. p_4 -> p_10 can be inferred via the biconditional elimination rule.