This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genetics, Subject name: Pathology
[{'content': 'In meiosis chromosome number is \nSelect and explain. \nA. Doubled, B. Halved, C. Reduced to one fourth, D. Will not alter', 'role': 'user'}, {'content': 'Answer: B \nExplanation: .Ans b: (Ref: NCERT text book)', 'role': 'assistant'}]