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': 'Fleeting skin lesions are often present in patients with: \nSelect and explain. \nA. Viral hepatitis B, B. Acute cholangitis, C. Viral hepatitis A, D. Carcinoma head of pancreas', 'role': 'user'}, {'content': "Answer: A \nExplanation: Fleeting skin lesions are often presents in patients with hepatitis B. Ref: Schiff's diseases of liver, Edition -11, Page - 3.", 'role': 'assistant'}]