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
Phagolysosome fusion defect is seen in? 
Select and explain. 
A. Chronic granulomatous disease, B. Chediak Hegashi disease, C. LAM 1, D. LAM 2
B: Chediak Hegashi disease
Answer: B: Chediak Hegashi disease 
Explanation: Ans. is 'b' i.e., Chediak Hegashi disease