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
Precancerous potential in Plummer- Vinson's syndrome may be due to change in the epithelium like: 
Select and explain. 
A. Atrophy, B. Hypertrophy, C. Acanthosis, D. All the above
A: Atrophy
Answer: A: Atrophy 
Explanation: None