This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
[{'content': 'In portal hypertension the sites of portosystemic anastomosis includes - \nSelect and explain. \nA. Lower end of esophagus, B. Around umbilicus, C. Lower third of rectum and anal canal, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]