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': 'Which of the following is transmitted by blood ? \nSelect and explain. \nA. Toxoplasma, B. Syphilis, C. CMV, D. All', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is `a' i.e., Toxoplasma; `b' i.e., Syphilis; 'c' i.e., CMV", 'role': 'assistant'}]