This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diagnosis in obstetrics, Subject name: Gynaecology & Obstetrics
[{'content': "Hazard of chorionic villous biopsy is: \nSelect and explain. \nA. congenital hea disease, B. Spina bifida, C. Down's syndrome, D. miscarriage", 'role': 'user'}, {'content': 'Answer: D \nExplanation: COMPLICATIONS Fetal loss oromandibular limb deformities vaginal bleeding D.C.DUTTA&;S TEXTBOOK OF GYNECOLOGY,Pg no:107,7th edition', 'role': 'assistant'}]