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': 'What is the normal weight gain in normal pregnancy? \nSelect and explain. \nA. 6-Apr, B. 8-Jun, C. 10-11 kg, D. 18-20', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The total weight gain during the course of a singleton pregnancy for a healthy woman averages 11 kg. This has been distributed to 1kg in first trimester and 5 kg each in second and third trimester. Ref: Textbook of Obstetrics by DC Dutta, 6th edition, Page 50.', 'role': 'assistant'}]