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: Medicine
[{'content': "Huntington's disease is due to the loss of - \nSelect and explain. \nA. Nigro striatal dopaminergic neurons, B. Intrastiatal cholinergic neurons, C. Intrastriatal GABA ergic neurons, D. Intrastriatal cholinergic and GABA ergic neurons", 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]