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: Dental
What fraction of inhaled mercury vapors retained in the body? 
Select and explain. 
A. 45-55%, B. 55-65%, C. 65-85%, D. More than 85%
C: 65-85%
Answer: C: 65-85% 
Explanation: None