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: q <-> p_10. p_10 <-> q.
q -> p_10 can be inferred via the biconditional elimination rule. p_10 -> q can be inferred via the biconditional elimination rule. p_10 -> q can be inferred via the biconditional elimination rule. q -> p_10 can be inferred via the biconditional elimination rule.