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: Dental
After removal of periodontal dressing what should be done to keep sensitivity to the minimum? 
Select and explain. 
A. Use of mouthwash, B. Use of desensitizing paste, C. Keep roots, plaque free, D. None of the above
C: Keep roots, plaque free
Answer: C: Keep roots, plaque free 
Explanation: None