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
Vasodilation in spider naevi is due to - 
Select and explain. 
A. Hepatotoxin, B. Estrogen, C. Testosterone, D. DHEA
B: Estrogen
Answer: B: Estrogen 
Explanation: Ans. is 'b' i.e., Estrogen