Three states, East Winnetka, Midland, and West Hampton, are located next to one another in that order. The states of East Winnetka and West Hampton permit the hunting and trapping of snipe, but the state of Midland strictly forbids these activities in order to protect snipe, a rare species of animal, from extinction. The state of Midland has a state statute that provides, "Possession of snipe traps is prohibited. Any game warden finding a snipe trap within the state shall seize and destroy it." Snipe traps cost about $15 each. Prentis is a resident of West Hampton and an ardent snipe trapper. She drove her car to East Winnetka to purchase a new improved snipe trap from a manufacturer there. In the course of her trip back across Midland with the trap in her car, Prentis stopped in a Midland state park to camp for a few nights. While she was in that park, a Midland game warden saw the trap, which was visible on the front seat of her car. The warden seized the trap and destroyed it in accordance with the Midland statute after Prentis admitted that the seized item was a prohibited snipe trap. No federal statutes or federal administrative regulations apply.""For this question only, assume that a valid federal administrative rule, adopted under a federal consumer product safety act, regulates the design of snipe traps. The rule was issued to prevent traps from causing injury to human beings, e.g., by pinching fingers while persons were setting the traps. No other federal law applies. Which of the following best states the effect of the federal rule on the Midland state statute?
The federal rule preempts the Midland state statute, because the federal rule regulates the same subject matter: snipe traps.  The federal rule preempts the Midland state statute, because the federal rule does not contain affirmative authorization for continued state regulation.  The federal rule does not preempt the Midland state statute, because the Midland state statute regulates wild animals, a field of exclusive state power.  The federal rule does not preempt the Midland state statute, because the purposes of the federal rule and the Midland state statute are different.