This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
[{'content': 'Gene for folic acid absorption is present on \nSelect and explain. \nA. Chromosome X, B. Chromosome XXI, C. Chromosome V, D. Chromosome XI', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]