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: Medicine
MHC class II antigens are located on which of the following cells: 
Select and explain. 
A. Platelets, B. Dendritic cell, C. RBC, D. T-cell
B: Dendritic cell
Answer: B: Dendritic cell 
Explanation: B i.e. Dendritic cells