This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Health care of community & international health, Subject name: Social & Preventive Medicine
[{'content': 'True about sentinel surveillance of HIV AIDS by NACO are all except \nSelect and explain. \nA. Yearly check up done, B. Pregnant females are included, C. Reduced antenatal HIV transmission, D. Target high risk population', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ref:Park's Textbook of Preventive and Social Medicine 25th Ed", 'role': 'assistant'}]