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
Electrocogulation is used for 
Select and explain. 
A. Gingivectomy, B. Flap surgeries, C. Mucogingival surgeries, D. All of the above
A: Gingivectomy
Answer: A: Gingivectomy 
Explanation: None