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: Anatomy
[{'content': 'Which of the cranial nerve decussate with in the brain : \nSelect and explain. \nA. Trochlear, B. Optic, C. Oculomotor, D. Oculomotor', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e., Trochlear', 'role': 'assistant'}]