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: Pharmacology
[{'content': 'Hormone replacement therapy is helpful in all of the following conditions EXCEPT: \nSelect and explain. \nA. Vaginal atrophy, B. Flushing, C. Coronary heart disease, D. Osteoporosis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]