This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Physiology
[{'content': 'Receptor for BDNF - \nSelect and explain. \nA. TrK - A, B. TrK - B, C. TrK - C, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) TrK-B(Ref: Ganong, 25th ed/p.95)NeurotrophinReceptorNerve growth factorTrk ABrain derived neurotrophic factorTrk BNeurotrophin 3Trk C, Trk BNeurotrophin 4/5Trk B', 'role': 'assistant'}]