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: Pathology
[{'content': 'Method of prevention of GVHD in bone marrow transplantation is \nSelect and explain. \nA. T-cell removal, B. Prior immune suppression, C. Post procedure immune suppression, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Answer- D. All of the abovePrior immunosuppressionT cell depletion from the marrow or stem cellsTreatment after transplant', 'role': 'assistant'}]