Which of the following statement(s) is/are true concerning the etiology of intestinal obstruction?
A.	In the United States, peritoneal adhesions account for over half of the cases of small bowel obstruction
B.	A leading cause of bowel obstruction is early postoperative adhesions
C.	Bowel obstruction cannot occur with a Richter’s hernia
D.	Ninety percent of adult cases of intussusception are associated with a pathologic process, most commonly a tumor
Answer:A
Which of the following statement(s) is/are true concerning the etiology of intestinal obstruction?
A.	In the United States, peritoneal adhesions account for over half of the cases of small bowel obstruction B.	A leading cause of bowel obstruction is early postoperative adhesions C.	Bowel obstruction cannot occur with a Richter’s hernia D.	Ninety percent of adult cases of intussusception are associated with a pathologic process, most commonly a tumor