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: Physiology
[{'content': 'A/E-are absorbed in the DCT \nSelect and explain. \nA. Water, B. Potassium, C. Chloride, D. Sodium', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Although K+ is also absorbed in DCT, secretion of K+ may exceed K+ absorption in this segment.', 'role': 'assistant'}]