While Doing an Assessment of the Perianal Area of a Patient,the

While doing an assessment of the perianal area of a patient,the nurse notes that the pigmentation of the anus is darker than the surrounding skin,that the anal opening is closed,and that a shiny,blue skin sac is present.The patient mentions that he has had pain with bowel movements and has noted some occasional spots of blood.What would this assessment and history most likely indicate?

A) Anal fistula
B) Pilonidal cyst
C) Rectal prolapse
D) Thrombosed hemorrhoid