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': 'Maternal viremia most commonly spreading to fetus in utero: \nSelect and explain. \nA. CMV, B. Rubella, C. HIV, D. Herpes', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) CMV Ref. Nelson 17/e, p 568, 623, 626, 631 Transplacental transmission occure in Viruses Rubella CMV HSV Varicella zoster virus Parvo B - 19 Coxasackie viruses HIV West nile virus Coxasackie viruses HBV and HCV Measles Bacteria Syphilis TB Brucella Parasite Plasmodium T. cruzi Microsporidia Toxoplasma', 'role': 'assistant'}]