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': 'Gamma motor neurons are mainly influenced by \nSelect and explain. \nA. Vestibulospinal tract, B. Rubrospinal tract, C. Anterior coicospinal tract, D. Tectospinal tract', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Gamma motor neurones are mainly influenced by rubrospinal tract Ref: guyton and hall textbook of medical physiology 12 edition page number:765,766,767', 'role': 'assistant'}]