This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: DNB 2018, Subject name: Biochemistry
[{'content': 'Which has more gene content X or Y? \nSelect and explain. \nA. X contents 2.8% more than Y, B. Y contents 2.8% more than X, C. X contents 0.28% more than Y, D. Y contents 0.28% more than X', 'role': 'user'}, {'content': 'Answer: A \nExplanation: X chromosome is bigger in size so x has 2.8 % more content than Y.', 'role': 'assistant'}]