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': 'A 46-year-old chronic alcohilic complains of infeility. What is the cause of testicular atropy ? \nSelect and explain. \nA. Liver dysfunction, B. Thrombosis of testicular vessels, C. Vitamin B12 deficiency, D. Peripheral neuropathy', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Liver dysfunction causes increased estrogen and decreased testosterone leading to testicular atropy.', 'role': 'assistant'}]