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': 'Which protein serum levels helps in distinguishing from acute and chronic liver failure \nSelect and explain. \nA. Aminotransaminase, B. Alkaline phosphatase, C. Bilirubin, D. Albumin', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Albumin is essential for maintaining the oncotic pressure in the vascular system. A low serum albumin indicates poor liver function. Decreased serum albumin levels are not seen in acute liver failure because it takes several weeks of impaired albumin production before the serum albumin level drops.serum albumin level is greatly decreased in chronic liver disease Ref Davidson edition23rd pg898', 'role': 'assistant'}]