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': 'Barrier methods are all EXCEPT: \nSelect and explain. \nA. Diaphragm, B. Foam tablets, C. Vaginal-sponge, D. Lippes loop', 'role': 'user'}, {'content': "Answer: D \nExplanation: (Lippes loop): Ref: (424-25-Park 20th)Barrier Methods(a) Physical Methods(b) Chemical methods1. CondomeFemale condome2. Diaphragm3. Vaginal sponge (Today)4. Foams' foamtablets, foam aerosols5. Creams, jelles and pastes - squeezed from a tube6. Suppositories - inserted manually7. Soluble films - C - film inserted manually(c) Combined methods Lippes loops: - Intrauterine device", 'role': 'assistant'}]