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: Dental
Which of the following is non-keratinocyte? 
Select and explain. 
A. Langhan's cell, B. RBC, C. Langerhans cell, D. Grey cell
C: Langerhans cell
Answer: C: Langerhans cell 
Explanation: None