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
Xeroradiography is used in... cancer detection. 
Select and explain. 
A. Stomach, B. Breast, C. Colonic, D. Pancreatic
B: Breast
Answer: B: Breast 
Explanation: Ans. Breast