This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Physiology
[{'content': 'Major surfactant is \nSelect and explain. \nA. Dipalmytoil lecithine, B. Dipalmytoil cephalin, C. Dipalmytoil serine, D. Dipalmytoil inositol', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Dipalmytol lecithin in is the major surfactant Ref: guyton and hall textbook of medical physiology 12 edition page number:311,312,313', 'role': 'assistant'}]