This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chronic Obstructive Pulmonary Disease, Subject name: Medicine
[{'content': 'Which of the following is not true in obstructive lung disease? \nSelect and explain. \nA. FEV|, B. TLC|, C. FVC|, D. Reduced timed vital capacity', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) TLC |Ref: Harrison 19th ed. / 306e-2fParameterObstructiveRestrictiveFEV1REDUCEDREDUCEDTLCNORMAL/ INCREASEDREDUCEDFVCREDUCEDREDUCEDFEV1/FVC RATIOREDUCEDNORMAL/INCREASEDRESIDUAL VOLUMEINCREASEDDECREASED', 'role': 'assistant'}]