This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Biochemistry
[{'content': "Specific test for ketohexoses \nSelect and explain. \nA. Selivanoff's test, B. Osazone test, C. Molisch test, D. None of these", 'role': 'user'}, {'content': "Answer: A \nExplanation: Selivanoff's test: this is a specific test for ketohexoses. Concentrated hydrochloric acid dehydrates ketohexoses to form furfural derivatives which condense with resorcinol to give a cherry red complex. Ref: https://en.m.wikipedia.org/wiki/Seliwanoff's_test", 'role': 'assistant'}]