Which of the following best states the effect of the federal rule on the Midland state statute?
The federal rule does not preempt the Midland state statute, because the purposes of the federal rule and the Midland state statute are different.
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. 