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: Pathology
[{'content': 'Sweat glands in cystic fibrosis \nSelect and explain. \nA. Decreased, B. Increased, C. No change, D. May increase or decrease', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]