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: Social & Preventive Medicine
[{'content': 'Which of the following conditions does not have a National Screening / Control Programme? \nSelect and explain. \nA. Diabetes Mellitus, B. Dental caries, C. Refractive errors, D. Carcinoma cervix', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The National Health Programmes have been launched by the Central Government for the control/eradication of communicable diseases, improvement of environmental sanitation, raising the standard of nutrition, control of population and improving rural health. Several programmes are currently under operation. However, currently there is no programme concerning dental caries. Ref: Preventive and Social Medicine, By K.Park, 19th edition, Page 346, 360-362, 373, 374', 'role': 'assistant'}]