This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdomen and pelvis, Subject name: Anatomy
[{'content': 'Spermatazoa with which chromosome is faster? \nSelect and explain. \nA. X chromosome, B. Y chromosome, C. Both same, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The spermatozoa bearing the Y chromosome swim faster than the spermatozoa bearing X chromosome.', 'role': 'assistant'}]