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: Anatomy
Which of the following is the first bone to ossify in human body 
Select and explain. 
A. Mandible, B. Maxilla, C. Clavicle, D. Humerus
C: Clavicle
Answer: C: Clavicle 
Explanation: The mandible is the second bone, next to the clavicle, to ossify in the body.