This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Non communicable diseases, Subject name: Social & Preventive Medicine
[{'content': 'Diaphragm is also known as- \nSelect and explain. \nA. Female condom, B. Duch cap, C. Soluble foam, D. Vaginal sponge', 'role': 'user'}, {'content': "Answer: B \nExplanation: park's textbook of preventive and social medicine 23rd edition. *diaphragm is a vaginal barrier it was invented by a German physician in 1882 also known as Dutch cap.diaphragm is a shallow cup made of synthetic rubber", 'role': 'assistant'}]