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: Medicine
[{'content': "The most likely diagnosis for a lady with central obesity showing purple striae on abdominal skin is: \nSelect and explain. \nA. Conn's syndrome, B. Cushing's syndrome, C. Addison's disease, D. Hypothyroidism", 'role': 'user'}, {'content': "Answer: B \nExplanation: Answer is B (Cushing's Syndrome): Central Obesity (Centripetal francal obesity) and the presence of violacious (purple) cutaneous striae suggest a diagnosis of Cushing's Syndrome.", 'role': 'assistant'}]