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 dose of radiation to the
operator of an X-ray machine is 
Select and explain. 
A. .05 rem per year, B. 0.5 rem per year, C. 5.0 rem per year, D. 50 rem per year
C: 5.0 rem per year
Answer: C: 5.0 rem per year 
Explanation: None