This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Non-Hormonal - Barrier Methods, Subject name: Gynaecology & Obstetrics
[{'content': 'Barrier type of contraception among the following: \nSelect and explain. \nA. OCP, B. IUCD, C. Spermicidal jelly, D. Symptothermic method', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ref: Dutta textbook of obstetrics 5th ed pg.534Explanation:BARRIER METHODS OF CONTRACEPTIONMale-condomsFemale-condom, diaphragm, cervical capSpermicidal creams, jelly and foam tablets Mechanism of action:Prevents sperm deposition in vagina,Prevents sperm penetration through the cervical os,Spermicides cause sperm immobilization.', 'role': 'assistant'}]