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': 'Which one of the following is not strategy under Roll Back Mlaria - \nSelect and explain. \nA. Strengthening of helth system, B. Use of insecticide treated bed nets, C. Anti-larval measures, D. Development of new antimalaria drugs', 'role': 'user'}, {'content': 'Answer: C \nExplanation: <p> Antilarval measures. Reference: Roll Back Malaria Website. <\\p>', 'role': 'assistant'}]