WILL GIVE BRAINLIEST, EXTRA POINTS, STARS, AND THANK YOU!!FOR THE RIGHT ANSWER!!!! PLEASE EXPLAIN YOUR ANSWER TO COMPLETE IT BECAUSE... (Absurd answers will be reported)

Which of the following is an example of a superimposed boundary?

A. The geometric boundary between the United States and Canada

B. The border of the European Union

C. The Pyrenees Mountains between France

D. The Great Wall of China