This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neurodegenerative Disorder, Subject name: Pathology
[{'content': "Nucleus involved in Alzheimer's disease is: \nSelect and explain. \nA. Nucleus Basalis of Meyne, B. Superior salivary nucleus, C. Ventromedial nucleus of thalamus, D. All of the above", 'role': 'user'}, {'content': "Answer: A \nExplanation: The brain of Alzheimer's disease patients shows severe neuronal loss in the nucleus basalis of Meyne. This pa is the major source of cholinergic input to cerebral cortex.", 'role': 'assistant'}]