A 19-Year-Old Male Has Suffered from Subsacral Pain and Swelling

A 19-year-old male has suffered from subsacral pain and swelling for 2 weeks and finally was referred to a colorectal surgeon for care.He is currently in the ambulatory surgical center operating room (OR) bed positioned in the jackknife position.The perioperative nurse has gently but firmly taped his buttocks laterally to the rails of the OR bed to promote exposure to the surgical site.Which procedure is the patient prepared to undergo based on his symptoms and the surgical preparation?

A) Internal hemorrhoidectomy
B) External hemorrhoidectomy
C) Removal of rectal foreign body
D) Pilonidal cystectomy