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: Unknown
[{'content': 'Which of the following is found in higher concentrations in aqueous humor than in plasma: \nSelect and explain. \nA. Protein, B. Glucose, C. Urea, D. Ascorbic acid', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Refer : Anatomy and Physiology of Eye – AK Khurana pg 59\nConcentration of components in plasma and aqueous humour', 'role': 'assistant'}]