This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Classification of carbohydrate, Subject name: Biochemistry
[{'content': 'Which of the following is not seen in human body? \nSelect and explain. \nA. L-fucose, B. L-fructose, C. D-Glucose, D. D- Fructose', 'role': 'user'}, {'content': 'Answer: B \nExplanation: L-fructose is not seen in human body All sugars in our body are D-sugars. All amino acids in the human protein are L-amino acids. But there are exceptions. (L-sugar found in the human body, i.e. L-fucose.) L-Fucose : Methyl pentose Found in glycoproteins e.g. Blood group antigen.', 'role': 'assistant'}]