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_4, if x_4 drives a car, then x_4 is drinking water. For all x_4, if x_4 climbs a mountain, then x_4 is driving a car. For all x_4, if x_4 drinks water, then x_4 is climbing a mountain. For all x_4, x_4 will not climb a mountain.
For all x_4, x_4 will not drink water can be inferred via the universal modus tollens rule. For all x_4, if x_4 drives a car, then x_4 is climbing a mountain can be inferred via the universal transitivity rule. For all x_4, if x_4 climbs a mountain, then x_4 is drinking water can be inferred via the universal transitivity rule. For all x_4, if x_4 drinks water, then x_4 is driving a car can be inferred via the universal transitivity rule.