This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Pathology
[{'content': 'Phagolysosome fusion defect is seen in? \nSelect and explain. \nA. Chronic granulomatous disease, B. Chediak Hegashi disease, C. LAM 1, D. LAM 2', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Chediak Hegashi disease", 'role': 'assistant'}]