This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'The following marker is used to assess the monoclonality in T-cells - \nSelect and explain. \nA. Kappa and Lambda chain, B. TCR gene rearrangement, C. CD, D. CD34', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Molecular analysis of the rearrangement in T cell population can distinguish polyclonal lymphocyte proliferations from monoclonal expansions. Reference :Robbins basic pathology 9th edition pg no 100:', 'role': 'assistant'}]