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': 'Prophaylaxis for malaria not used - \nSelect and explain. \nA. Doxycycline, B. Aesunate, C. Chloroquine, D. Mefloquine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Drugs for chemoprophylaxis of malaria include Chloroquine Proguanil Mefloquine Doxycycline Reference : Park&;s Textbook of preventive and social medicine, 24th edition.Pg no. 285', 'role': 'assistant'}]