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 type of cells are most numerous in gingiva 
Select and explain. 
A. Melanocytes, B. Keratinocytes, C. Giant cells, D. Polymorphonuclear leukocytes
B: Keratinocytes
Answer: B: Keratinocytes 
Explanation: None