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: For all x_11, if x_11 were a police officer, then x_11 is driving a car. For all x_11, if x_11 cooks, then x_11 is a police officer. Sarah is driving a car if and only if Sarah is cooking.
If Sarah drives a car, then Sarah is cooking can be inferred via the biconditional elimination rule. If Sarah cooks, then Sarah is driving a car can be inferred via the biconditional elimination rule. For all x_11, if x_11 cooks, then x_11 is driving a car can be inferred via the universal transitivity rule.