anal mass for colonoscopic biopsies

A 27-year-old 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 2-MRI of the anal canal 3-EUS 4- Surgical consultation 5- rectal ultrasonography