This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Gynaecology & Obstetrics
[{'content': 'Total lung capacity during pregnancy is \nSelect and explain. \nA. Unchanged, B. Decreases, C. Increases, D. Increases in the early pregnancy followed by decreasing as the pregnancy progresses', 'role': 'user'}, {'content': "Answer: A \nExplanation: Total lung capacity: the combination of FRC and inspiratory capacity is unchanged or decreases by less than 5 percent at term(Ref: William's Obstetrics; 25th edition)", 'role': 'assistant'}]