This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Medicine
[{'content': 'All except in brown sequard syndrome \nSelect and explain. \nA. Ipsilateral pyramidal tract features, B. C/L dorsal column, C. C/L spinothalmic, D. Insilateral Dianter extensor', 'role': 'user'}, {'content': 'Answer: B \nExplanation: . *Ipsilateral dorsal column features are affected because they do not cross to opposite side until they reach medulla. Ref Harrison20th edition pg 2667', 'role': 'assistant'}]