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: Jennifer is a police officer if and only if Barbara is running. Barbara is running or Jennifer is not a police officer.
If Jennifer were a police officer, then Barbara is running can be inferred via the rewriting rule. If Jennifer were a police officer, then Barbara is running can be inferred via the biconditional elimination rule. If Barbara goes running, then Jennifer is a police officer can be inferred via the biconditional elimination rule.