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': 'The deep cerebellar nuclei have their effect on other brain centers by \nSelect and explain. \nA. Comparison of inhibitory effects by Purkinje cells and excitatory effects of afferent collateral axons, B. Summation of mossy fibers and climbing fibers synapsing on deep cerebellar nuclei, C. Temporal synaptic effects of granular and parallel fiber input, D. Excitatory Purkinje influences and inhibitory granule cell input', 'role': 'user'}, {'content': 'Answer: A \nExplanation: All input to the coex of the cerebellum collateralizes and sends axon branches to both the coex and the deep cerebellar nuclei. The activity of the deep cerebellar nuclei depends on the integrated response of the direct excitatory input from the collaterals and the inhibitory influence of the Purkinje cells of the cerebellar coex.', 'role': 'assistant'}]