This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Medicine
[{'content': 'All the following are at-risk groups meriting Hepatitis B vaccination in low endemic areas EXCEPT- \nSelect and explain. \nA. Patients on chronic hemodialysis, B. Diabetics on insulin, C. Medical/nursing personnel, D. Patients with chronic liver disease', 'role': 'user'}, {'content': 'Answer: B \nExplanation: high prevalence of hepatitis B in ceain locality and dialysis units, together with the recent discovery of occult hepatitis B infection, vaccination of non-immune clinical staff and renal patients preferably before the development of advanced renal failure appears paicularly impoant in the control of HBV Ref Davidson edition23rd pg874', 'role': 'assistant'}]