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
A coronally positioned pedicle graft is used when a single tooth exhibits gingival recession and 
Select and explain. 
A. Bleeding, B. Pus discharge, C. Irreversible pulpitis, D. Sensitivity
D: Sensitivity
Answer: D: Sensitivity 
Explanation: None