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
High dose radiotherapy causes pancreatic - 
Select and explain. 
A. Acinar dificiency, B. Islets of Langerhans deficiency, C. A +B, D. None
A: Acinar dificiency
Answer: A: Acinar dificiency 
Explanation: Acinar cells are radiosensitive while islets are relatively radioresistant