Analyze the map below and answer the question that follows.

A satellite map of Southeast Asia. Two bodies of water on the map are labeled A and B. A is between China and Vietnam. B is between Malaysia and Cambodia.
Image courtesy of NASA

The letters A and B on the map above mark two bodies of water that surround the Indochinese Peninsula in Southeast Asia. What bodies of water are they?

A. the Atlantic Ocean and the Indian Ocean
B. the Gulf of Tonkin and the Gulf of Thailand
C. the Pacific Ocean and the Gulf of Tonkin
D. the South China Sea and the Indian Ocean