Which of the following statements correctly describe the geopolitical theories mentioned?

A. The Heartland Theory suggests control over the central continental area is the key to global dominance.

B. The Rimland Theory counters the Heartland Theory by emphasizing the importance of coastal areas.

C. Geopolitics of climate change involves understanding how global warming impacts international politics.

D. The geopolitics of the Indian Ocean highlights its strategic importance due to the presence of major sea routes.