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: Forensic Medicine
Quickening appears at about: PGI 09 
Select and explain. 
A. 6 weeks, B. 8-10 weeks, C. 16-20 weeks, D. 20-24 weeks
C: 16-20 weeks
Answer: C: 16-20 weeks 
Explanation: Ans. 16-20 weeks