anal mass for colonoscopic biopsies

A 27yearold man was admitted to the endoscopy unit. the patient gives a history of anal mass diagnosed by computed tomography. colonoscopy was done and revealed a mucosal bulge just above the anal piles with a reddish elevation at its center. what will you do next 1 take biopsies 2MRI of the anal canal 3EUS 4 Surgical consultation 5 rectal ultrasonography