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
Respiratory system develops from: 
Select and explain. 
A. Ventral wall of foregut, B. Dorsal wall of foregut, C. Ventral wall of midgut, D. Dorsal wall of midgut
A: Ventral wall of foregut
Answer: A: Ventral wall of foregut 
Explanation: Respiratory system develops from: ventral wall of foregut.