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: Gynaecology & Obstetrics
[{'content': 'High risk pregnancy are all except: \nSelect and explain. \nA. A130 incompatibility, B. Rh isoimmunisation, C. Twin pregnancy, D. Third pregnancy', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Third pregnancy', 'role': 'assistant'}]