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: Surgery
[{'content': 'MEN-2A includes A/E - \nSelect and explain. \nA. Ganglioneuromas, B. Cutaneous Lichenoid amyloids, C. Mutation in RET in chromosome 10, D. Parathyroid adenoma', 'role': 'user'}, {'content': "Answer: A \nExplanation: MEN 2A or Sipple's syndrome &. MEN 2B are associated with mutation in the RET protooncogene located in pericentromeric region of chromosome 10.", 'role': 'assistant'}]