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: Pathology
[{'content': 'Delayed separation of umbilical cord stump is seen in? \nSelect and explain. \nA. Chediak Higashi syndrome, B. Chronic granulomatous disease, C. Leukocyte adhesion deficiency, D. All of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Usually umbilical cord separates within 1 week after birth. In LAD-1 separation is delayed.', 'role': 'assistant'}]