This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiology, Subject name: Social & Preventive Medicine
[{'content': 'A pateint with cervix cancer is mised by a screeing test and later diagnosed with advanced disease. This time interval is called \nSelect and explain. \nA. Lead time, B. Screening time, C. Serial interval, D. Generation time', 'role': 'user'}, {'content': 'Answer: A \nExplanation: .lead time is actually the advantage gained by screening.the priod between the diagnosis by early detection and diagnosis by other means.detection programmes should therfore concentrate on those conditions where the time lag between the disease&;s onset and its final critical point is sufficiently long to be suitable for population screening. ref:park&;s textbook,ed 22,pg no 128', 'role': 'assistant'}]