This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Demography and family planning, Subject name: Social & Preventive Medicine
[{'content': 'Dutch cap is a \nSelect and explain. \nA. Diaphragm, B. Condom, C. Vaginal sponge, D. Vaginal ring', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Dutch cap is diaphragm which is used as a vaginal barrier The diaphragm is a shallow cup made of synthetic rubber or plastic material Reference : Park&;s textbook of preventive and social medicine, 23rd edition, Page no: 495', 'role': 'assistant'}]