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': 'Following blood transfusion, non-cardiogenic pulmonary oedema may sometimes occur because of- \nSelect and explain. \nA. RBC incompatibility, B. Antigen-antibody mechanism involving human leucocyte antigen, C. Platelet surface antigen reaction, D. Antibody to IgA in donor plasma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]