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
IgG antibodies have a half-life of approximately 
Select and explain. 
A. 1 hour, B. 1 day, C. 1 Week, D. 1 Month
D: 1 Month
Answer: D: 1 Month 
Explanation: None