This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cirrhosis and Alcoholic Liver Disease, Subject name: Medicine
[{'content': 'Vasodilation in spider naevi is due to - \nSelect and explain. \nA. Hepatotoxin, B. Estrogen, C. Testosterone, D. DHEA', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Estrogen", 'role': 'assistant'}]