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
Lack of differentiation of cell is known as 
Select and explain. 
A. Anaplasia, B. Hypertrophy, C. Dysplasia, D. Metaplasia
A: Anaplasia
Answer: A: Anaplasia 
Explanation: Anaplasia: Lack of differentiation is called anaplasia.