Answer:
B. the Irrawaddy Peninsula and the Mekong Peninsula
Step-by-step explanation:
The Indochinese Peninsula refers to the continental portion of Southeast Asia. This includes the countries of Myanmar, Thailand, parts of Malaysia, Laos, Cambodia and Vietnam. On the other hand, the Malay peninsula includes peninsular Malaysia, Southern Thailand, parts of Myanmar and Singapore. This is the southernmost point of the Asian mainland.