18. The medical record indicates that a 33-year-old woman had a double balloon endoscopy performed. Which of the following describes a double balloon endoscopy?
A. A scope is used to evaluate the colon.
B. A patient swallows a capsule that contains a camera
O C. A scope is used to look into the small bowel where standard endoscopes don't reach
D. A scope is used to look in the stomach and esophagus.
