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: Social & Preventive Medicine
Type of surveillance included in integrated disease  control program for non-communicable disease is? 
Select and explain. 
A. Sentinel surveillance, B. Regular Surveillance, C. Periodic regular survey, D. Additional state priority
C: Periodic regular survey
Answer: C: Periodic regular survey 
Explanation: None