You are seeing a 64-year-old female whose complaints include cramping in her lower abdomen that is only relieved by defecation. She says that the pain “tends to come and go” and that she often experiences heartburn and fatigue. She adds that her bowel habits sometime alternate between constipation and diarrhea. As you perform the examination, she tells you that she has been working long hours recently to meet an approaching deadline. Based on these findings, which of the following would you most likely suspect as a cause of the patient’s most likely condition? Group of answer choices Fecalith obstruction Helicobacter pylori infection High-fat diet Anxiety