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
The histologic hallmark of langerhan cells is? 
Select and explain. 
A. Dendritic cell processes, B. Giant mitochondria, C. Birbeck granules, D. Eosinophilic granules
C: Birbeck granules
Answer: C: Birbeck granules 
Explanation: Ans. is 'c' i.e., Birbeck granules