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: Physiology
[{'content': 'Pulmonary surfactant \nSelect and explain. \nA. Pulmonary surfactant, B. In Hyaline membrane disease deficiency occurs, C. Theraputic application seen, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A i.e. Secreted from 26th week of gestation; B i.e. In hyaline membrane disease deficiency of surfacetant is seen C i.e. Theraputic application is seen', 'role': 'assistant'}]