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: James is climbing a mountain or Thomas is working. James is climbing a mountain if and only if James is cooking. James is not cooking.
If James climbs a mountain, then James is cooking can be inferred via the biconditional elimination rule. If James cooks, then James is climbing a mountain can be inferred via the biconditional elimination rule. James is not climbing a mountain can be inferred via the biconditional elimination rule.