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: Anatomy
[{'content': 'Lungs develop from: \nSelect and explain. \nA. Foregut, B. Midgut, C. Hindgut, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: When the embryo is approximately 4 weeks old, the respiratory diveiculum (lung bud) appears as an outgrowth from the ventral wall of the foregut', 'role': 'assistant'}]