Answer:
C. Indochinese Peninsula and the Malay Peninsula
Step-by-step explanation:
The area marked A in the image covers the Indochinese peninsula. This area spanned over places like Cambodia, Laos, Myanmar, Thailand, and Viet Nam. It is also in southeast Asia that lies between China and India.
The Area marked B covers the country of Malaysia and its surroundings such as part of Thailand and Myanmar.
Hence, considering the map, the right answer is option C "Indochinese Peninsula and the Malay Peninsula."