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: Microbiology
Half-life of CRP is 
Select and explain. 
A. 6 hours, B. 12 hours, C. 20 hours, D. 24 hours
C: 20 hours
Answer: C: 20 hours 
Explanation: Plasma half-life of CRP is about 19 hours.