This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Basics of carbohydrate metabolism, Subject name: Biochemistry
[{'content': 'Following are the test done for proteins, sugar & ketones. Which will be positive in starvation state in urine? \nSelect and explain. \nA. 1 & 2, B. Only 2, C. Only 3, D. 2 & 3', 'role': 'user'}, {'content': "Answer: C \nExplanation: In Starvation, Ketone body will be positive in urine. Proteins Carbohydrates Ketone bodies Biuret test positive only if it has at least 2 peptide bonds. Benedict's test Positive for reducing sugars Rothera's test (image shown below) Gerhardt's test.", 'role': 'assistant'}]