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: Pathology
Which of the following is not a type of dental caries based on senility of dental caries: 
Select and explain. 
A. Rampant caries., B. Arrested caries., C. Recurrent caries., D. None.
C: Recurrent caries.
Answer: C: Recurrent caries. 
Explanation: Based on whether it is new or occurring at margin of restoration

Primary
Recurrent (Secondary)

Based on senility of dental caries

Rampant
Arrested