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': 'Structure A is formed by which of the following tract? \nSelect and explain. \nA. Pontocerebellar, B. Olivocerebellar, C. Vestibulo cerebellar, D. Anterior spinocerebellar', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Nerve fibers entering and leaving the cerebellum pass through superior middle and inferior cerebellar peduncles which connect the cerebellum to midbrain, pons and medulla respectively. Middle cerebellar peduncle is made up of pontocerebellar fibers.', 'role': 'assistant'}]