This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: New born infants, Subject name: Pediatrics
[{'content': 'Loss of pulmonary surfactant in premature infant causes __________ \nSelect and explain. \nA. Pulmonary edema, B. Collapse of alveoli, C. Elastic recoil of lungs, D. Emphysema', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Surfactant dysfunction is a lung disorder that causes breathing problems. Without normal surfactant, the tissue surrounding the air sacs in the lungs (the alveoli) sticks together (because of a force called surface tension) after exhalation, causing the alveoli to collapse. Reference: GHAI Essential pediatrics, 8th edition', 'role': 'assistant'}]