This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Gynaecology & Obstetrics
[{'content': 'All of the folowing are known causes of recurrent atoion except: \nSelect and explain. \nA. TORCH infections, B. SLE, C. Rhincompatibility, D. Syphilis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Causes Chromosomal abnormalities Uterine factors Cervical insufficiency Immunological causes Inherited thrombophilias Endocrine causes Infections Systemic disorder (refer pgno:148 sheila 2 nd edition)', 'role': 'assistant'}]