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
Radiation dose monitoring in occupational personal is done by 
Select and explain. 
A. TLD Badge, B. Linear accelerator, C. Collimators, D. Grid
A: TLD Badge
Answer: A: TLD Badge 
Explanation: ref : david sutton