This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': "Pigmentation in the liver is caused by all except \nSelect and explain. \nA. Liposuction, B. Pseudo Melanin, C. Wilson's disease, D. Malaria pigment", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ref, Robbins 7/ep39,910,914.', 'role': 'assistant'}]