This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Gynae), Subject name: Gynaecology & Obstetrics
[{'content': 'Weight of abortus is - \nSelect and explain. \nA. 700-900 gms, B. 1-1.2 kg, C. <500 gms, D. 500-750 gms', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. is \'c\' i.e., <500 gms * The National Center for Health Statistics defines an "abortus" as " fetus or embryo removed or expelled from the uterus during the first half of gestation--20 weeks or less, or in the absence of accurate dating criteria, born weighing < 500 g."', 'role': 'assistant'}]