A 60-year-old patient came with 4 episodes of massive bleeding per rectum. On examination the abdomen is soft and there is no tenderness, with bowel sounds being normal. The most likely diagnosis is

(A) Diverticulitis # Diverticulitis, or inflammation of a diverticulum, is related to the retention of particulate material within the diverticular sac and the formation of a fecolith.> Consequently, the blood vessel is either compressed or eroded, leading to either perforation or bleeding