This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urology, Subject name: Surgery
A complicated case of diveicular disease is defined as diveicula with? 
Select and explain. 
A. Abdominal pain, B. Abscess and perforation, C. Constipation or diarrhea, D. Diveicular bleeding
B: Abscess and perforation
Answer: B: Abscess and perforation 
Explanation: .DIVEICULAR DISEASE OF THE COLON * They are acquired herniations of colonic mucosa through circular muscles at the points where blood vessels penetrate (points of least resistance). * It is more commonly localised to sigmoid colon (90%) but occasionally seen in full length of the colon. Rectum is not affected. saint's triad (5%) includes *Diveiculitis *Hiatus hernia *Gallstones.Complications of diveiculitis * Perforation and pericolic abscess or peritonitis * Progressive stenosis and intestinal obstruction * Profuse colonic haemorrhage (17-20%) * Fistula formation (5%)--vesicocolic, vaginocolic, enterocolic, colocutaneous. ref:SRB&;s manual of surgery,ed 3,pg no 820