This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
[{'content': 'Last case of small pox came from - \nSelect and explain. \nA. Somalia, B. Ethiopia, C. India, D. Bangladesh', 'role': 'user'}, {'content': 'Answer: A \nExplanation: <p> The last case of smallpox(variola) minor occurred in Merca,Somalia,in October 1977. Reference:Ananthanarayan & Paniker&;s textbook of Microbiology,9th edition ,page no:463. <\\p>', 'role': 'assistant'}]