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': 'Which is true about post ftansfusion malaria \nSelect and explain. \nA. Caused by plasmodium malaria, B. Radical chemotherapy is required, C. Transmitted by needles, D. Caused by P. ovale', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]