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': 'Hypokalemic paralysis is a side effect of: \nSelect and explain. \nA. Gossypol, B. DMPA, C. Testosterone enanthate, D. Cyproterone acetate', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Gossypol\n\nIt is a male contraceptive pill which contains-Disequilterpene aldeayde\nDiscovered in china from an extract of cottonseed.\nMechanism of action it inhibits spermatogenesis and decreases epididymal sperm motility.\nSide effect - Hypokalemic paralysis in 1% patients\n\nOther male hormonal contraceptives:\nTestosterone enanthate injectable\nTestosterone bucolate injectable', 'role': 'assistant'}]