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: Dental
Rural and Urban difference in prevalence is seen in all of the following, except: 
Select and explain. 
A. Lung cancer, B. Tuberculosis, C. Mental illness, D. Chronic bronchitis
B: Tuberculosis
Answer: B: Tuberculosis 
Explanation: None