This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Radiology
Prophylactic intracranial radiation is given to 
Select and explain. 
A. Small cell carcinoma, B. Testicular carcinoma, C. Breast carcinoma, D. Gastric carcinoma
A: Small cell carcinoma
Answer: A: Small cell carcinoma 
Explanation: (Ref: doi:10.1634/theoncologist.5-4-293The Oncologist August 2000vol. 5 no. 4 293-298; Prophylactic Cranial Irradiation in Small-Cell Lung Cancer)