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
The maximum permissible radiation exposure per year recommended by NCRP for a radiation worker is – 
Select and explain. 
A. 3 rad, B. 8 rad, C. 10 rad, D. 50 mSv
D: 50 mSv
Answer: D: 50 mSv 
Explanation: Maximum permissible dose limit for occupational person (radiation worker) is 50 mSv (5 rem).