This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
[{'content': 'Assertion: Spermicides containing non-oxynol-9 provide effective protection against STDs.\nReason: Non-oxynol 9 has apoptotic effects on HIV, gonococci and chlamydia. \nSelect and explain. \nA. Both assertion and reason are true independently, B. Assertion is true, reason is false, C. Assertion is false, reason is true, D. Both assertion and reason are false', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Spermicides do not provide protection against STDs.', 'role': 'assistant'}]