This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Microbiology
[{'content': "BRAF V600E mutations are seen in all of the following Except \nSelect and explain. \nA. Langherhan's cell histiocytosis, B. Erdheim Chester disease, C. Ovarian carcinoma, D. Grade II astrocytoma", 'role': 'user'}, {'content': "Answer: D \nExplanation: BRAF V600E (valine conveing to glutamate at the 600th position)is seen in the following cancers:Langerhan's cell histiocytosisHairy cell leukemiaMalignant melanomaPilocytic astrocytoma (WHO Grade I astrocytoma)Ovarian carcinomaEndometrial carcinomaColorectal carcinomaPapillary carcinoma thyroidErdheim Chester disease", 'role': 'assistant'}]