This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
The fetus can be considered ble if the following ossification center appears 
Select and explain. 
A. Calcaneum, B. Manubrium sterni, C. Lower end of femur, D. None of the above
C: Lower end of femur
Answer: C: Lower end of femur 
Explanation: .