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: Pediatrics
[{'content': 'The foetal length is affected if the mother has undernutrition during the – \nSelect and explain. \nA. First trimester, B. Second trimester, C. Third trimester, D. Any time during the pregnancy', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Fetal growth is affected by maternal nutrition during any trimester in pregnancy.\nFetal growth is affected even by nutritional status of mother prior to pregnancy.', 'role': 'assistant'}]