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: Forensic Medicine
[{'content': 'A 20 yrs aged patient, presents in coma with pin point pupils and fasciculations but no fever. Most probable diagnosis is - \nSelect and explain. \nA. Head injury, B. Dhatura, C. Pontine haemorrhage, D. Organophosphorous poisoning', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]