This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hepatitis, Subject name: Medicine
[{'content': 'Which of the following is the most common cause of transfusion associated hepatitis? \nSelect and explain. \nA. Hepatitis A, B. Hepatitis B, C. Hepatitis C, D. Hepatitis D', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Hepatitis B- is the most common cause of transfusion associated hepatitis', 'role': 'assistant'}]