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: Social & Preventive Medicine
[{'content': 'Excess intake of retinol causes: \nSelect and explain. \nA. Nausea, B. Hepatomegaly, C. Anorexia, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: An excess intake of retinol causes nausea, vomiting, anorexia and sleep disorders followed by skin desquamation and then an enlarged liver and papillar edema. Ref: Park 22nd edition, page 571', 'role': 'assistant'}]