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
Structure arising from the apex of infected non vital tooth is 
Select and explain. 
A. Dentigerous Cyst, B. Odontogenic Keratocysts, C. Radicular Cyst, D. Gorlin Cysts
C: Radicular Cyst
Answer: C: Radicular Cyst 
Explanation: Answer- C. Radicular CystIs the most common type of jaw cyst.Radicular cyst develops at the apex of an infected, nonvital tooth.If the tooth is removed and the cyst persists, it is called a residual cystThere is a bimodal incidence within the third and sixth decades of life and they are rarely seen in the primary dentition.Usually presents as a radiolucent lesion around the apex ofa tooth root.