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
Center of ossification of femur appears at: PGI 07 
Select and explain. 
A. 36 weeks, B. 38 weeks, C. 40 weeks, D. 28 weeks
A: 36 weeks
Answer: A: 36 weeks 
Explanation: Ans. 36 weeks