This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Medical & Surgical Illness Complication Pregnancy, Subject name: Gynaecology & Obstetrics
[{'content': 'Most common cause of intrauterine infection: \nSelect and explain. \nA. Rubella, B. Toxoplasma, C. Hepatitis, D. Cytomegalovirus', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. is d, i.e. CytomegalovirusRef. Williams Obs. 23/e, p 1216, 1217; Harrison 17/e, p 48Most common cause of intrauterine infection is cytomegalovirus.', 'role': 'assistant'}]