This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Vital capacity and timed vital capacity is decreased in all except: 
Select and explain. 
A. Asthma, B. Scoliosis, C. Pneumonia, D. Emphysema
B: Scoliosis
Answer: B: Scoliosis 
Explanation: In scoliosis, vital capacity is decreased but timed vital capacity is normal.