Answer:
A. They are both located in North America
Step-by-step explanation:
A. Although it is a European country, Greenland is physically a part of North America.
B is not correct because, while it borders the Pacific Ocean on the West Coast, The US is not in the Pacific Ocean. Greenland lies between the North Atlantic and Arctic Oceans.
C is not correct because the United States is not an island.
D is not correct because neither one is its own contintent.