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_6 -> q_6. p <-> w_1. p_6 <-> w_1. ~q_6.
~p_6 can be inferred via the modus tollens rule. p -> w_1 can be inferred via the biconditional elimination rule. p_6 -> w_1 can be inferred via the biconditional elimination rule. w_1 -> p can be inferred via the biconditional elimination rule. w_1 -> p_6 can be inferred via the biconditional elimination rule.