This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urea cycle, Subject name: Biochemistry
[{'content': 'Which one of the following is a symptom of ammonia intoxication? \nSelect and explain. \nA. Slurring of speech, B. Abdominal pain, C. Diarrhea, D. Constipation', 'role': 'user'}, {'content': 'Answer: A \nExplanation: One of earlier symptoms of ammonia intoxication is haziness of vision and slurring of speech Other clinical features of urea cycle defects:- Increased blood glutamine Decreased BUN (Blood Urea Nitrogen) Cerebral oedema Vomiting Lethargy hyperventilation Note:-Severe ammonia toxicity can lead to coma and eventually death.', 'role': 'assistant'}]