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: Surgery
Hangman's fracture is fracture of C2 
Select and explain. 
A. Dens fracture, B. Lamina, C. Pars interaicularis, D. Spinous process
C: Pars interaicularis
Answer: C: Pars interaicularis 
Explanation: C i.e. Pars interaicularis