This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Congenital Malformations, Subject name: Pediatrics
[{'content': 'Respiratory system develops from: \nSelect and explain. \nA. Ventral wall of foregut, B. Dorsal wall of foregut, C. Ventral wall of midgut, D. Dorsal wall of midgut', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Respiratory system develops from: ventral wall of foregut.', 'role': 'assistant'}]