This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chemotherapy, Subject name: Pharmacology
[{'content': 'All the following are hormonal agents used against breast cancer except \nSelect and explain. \nA. Letrozole, B. Exemestane, C. Taxol, D. Tamoxifen', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Refer Katzung 10th/897 Letrozole, anastrozole and exemestane are aromatase inhibitors useful for the treatment of tamoxifen resistant breast cancer Tamoxifen is a SERM It is also used for breast cancer Taxol is commonly used term for paxclitaxel', 'role': 'assistant'}]