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': 'Criteria for fetal growth are all EXCEPT: \nSelect and explain. \nA. Height of the uterus, B. Maternal weight gain, C. Ultrasonographic measurement of biparietal diameter, D. Ultrasonographic measurement of fetal abdominal circumference', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B. Maternal weight gaina. Maternal weight gain is not a sensitive criterion for fetal growth because contribution of fetal weight to maternal weight gain during pregnancy is less significant than that of water retention and fat accumulation during pregnancy.b. The total weight gain during the course of a singleton pregnancy is 11kg., out of which fetus contributes only about 3kg.', 'role': 'assistant'}]