<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A physician attempts to study cirrhosis in his state. Using a registry of admitted patients over the last 10 years at the local hospital, he isolates all patients who have been diagnosed with cirrhosis. Subsequently, he contacts this group of patients, asking them to complete a survey assessing their prior exposure to alcohol use, intravenous drug abuse, blood transfusions, personal history of cancer, and other medical comorbidities. An identical survey is given to an equal number of patients in the registry who do not carry a prior diagnosis of cirrhosis. Which of the following is the study design utilized by this physician?? A: Case-control study, B: Cohort study, C: Cross-sectional study, D: Meta-analysis, E: Randomized controlled trial,  <response>: This is a question about study design. The physician is looking at two groups - patients diagnosed with cirrhosis, and patients without a diagnosis of cirrhosis. He is surveying both groups to look for differences in prior exposures that may be associated with cirrhosis. This is a retrospective approach, looking back in time to assess exposures prior to diagnosis. The two groups are selected based on their disease status with or without cirrhosis, rather than being followed forward in time. This matches the definition of a case-control study design.A: Case-control study 