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: Radiology
Radiosensitivity of tumour depends on: 
Select and explain. 
A. Histology, B. Blood supply, C. Nucleus atypia, D. Number of cells
A: Histology
Answer: A: Histology 
Explanation: Ans. Histology