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: Microbiology
[{'content': 'ABO incompatibility is an example for \nSelect and explain. \nA. Type-I HSN reaction, B. Type-II HSN reaction, C. Type-III HSN reaction, D. Type-IV HSN reaction', 'role': 'user'}, {'content': "Answer: B \nExplanation: Type 2 HSN\n\nTransfusion reaction.\nErythroblastosis fetalis.\nGrave's disease.\nMyasthenia gravis.", 'role': 'assistant'}]