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
Excess intake of retinol causes: 
Select and explain. 
A. Nausea, B. Hepatomegaly, C. Anorexia, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: 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