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': 'Carbohydrate of blood group substance is \nSelect and explain. \nA. Sucrose, B. Fucose, C. Arabinose, D. Maltose', 'role': 'user'}, {'content': 'Answer: B \nExplanation: L-fucose is the carbohydrate poion of Blood group substances', 'role': 'assistant'}]