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': 'The shortest part of the colon is- \nSelect and explain. \nA. Transverse colon, B. Ascending colon, C. Descending colon, D. Sigmoid colon', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Among given options, ascending colon is shortest.', 'role': 'assistant'}]