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 55-year-old woman presents with progressively deepening jaundice, uncontrollable pruritus, pain in the abdomen (right upper quadrant) and yellow coloured urine. Investigations revealed - \nSelect and explain. \nA. Viral hepatitis, B. Cirrhosis of liver, C. Carcinoma of head of the pancreas, D. Hepatocellular carcinoma', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]