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
Intraoperative Radiotherapy is used in 
Select and explain. 
A. Pancreatic Carcinoma, B. Gastric Carcinoma, C. Colorectal Carcinoma, D. All the above
D: All the above
Answer: D: All the above 
Explanation: Intra-op radiotherapy

Pancreatic, gastric, Colorectal carcinoma.
Head and neck cancers, Genitourinary cancers.
Retroperitoneal sarcomas.