A 30 years old male reported with chief complaint of  constant radiating, gnawing pain that is intensified by eating spicy foods and chewing. He also reported a "metallic" foul taste and an excessive amount of "pasty"saliva. A general examination revealed fever and increased pulse rate. Intra-oral examination showed punched-out, crater like depressions at the crest of the interdental gingival papillae, covered by a gray pseudomembranous slough, in the upper anterior teeth.

Surgical procedure for severe tissue destruction in such infection is: (A) Reshaping the gingiva (Gingivoplasty), (B) Resection of the gingiva (Gingivectomy), (C) Apically displaced flap surgery, (D) Coronally displaced flap surgery
Answer is A. None