This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pharmacology
[{'content': 'Male gynaecomastia is seen with: \nSelect and explain. \nA. Clomiphene, B. Testosterone, C. Spironolactone, D. Tamoxifen', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Gynecomastia occurs in a number of male patients treated with Spironolactone, Anti-androgens , Anabolic steroids and androgens, diazepam, cimetidine Tamoxifen is a SERM Clomiphene citrate is an antiestrogen. Testostetone is a natural androgen. (Ref.Essentials of medical pharmacology TD Tripathi 7th edition page no.524)', 'role': 'assistant'}]