This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
[{'content': 'The amino acid that acts as a precursor in the production of urea is \nSelect and explain. \nA. Arginine, B. Aspaic acid, C. Ornithine, D. Glutamate', 'role': 'user'}, {'content': "Answer: A \nExplanation: (Refer: Harper's Illustrated Biochemistry, 26th edition, pg no: 265)", 'role': 'assistant'}]