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': 'All of the following are true for a screeing test except- \nSelect and explain. \nA. Less accurate, B. Forms the basis for treatment, C. Test results are arbitrary, D. Less expensive', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Screening tests do not form the basis for treatment as a specific diagnostic test will need to be performed to confirm the diagnosis suggested by a screening test in order to start a specific treatment.\nFor example, in HIV infection screening is done by ELISA. If the ELISA comes to be positive, western blot is done to confirm the diagnosis before starting treatment.', 'role': 'assistant'}]