The brothers pride themselves on maintaining high standards and satisfying their customers. For several months, Abe has a number of symptoms, including indigestion, loss of appetite, abdominal pain, and diarrhea. One day, he remarked to his brothers that his diarrhea look oily. The abdominal pain was relieved temporally by eating and by taking over the counter antacids. Finally, he saw his physician, who referred him to a gastroenterologist. Abe underwent fiber optic endoscopy, which showed an ulcer in duodenal bulb. To determine the cause of the ulcer, additional tests were performed, including a serum grastin level, analysis of gastric contents, a pentagastrin stimulation test, and a secretin stimulation test