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: Medicine
Pulmonary function changes in acute bronchial asthma in untreated patient -a) ↑ed peak expiratory flowb)  ↓ed TLCc)  ↓ed FVC  d) ↑ed RVe) ↑ed FEV 
Select and explain. 
A. ab, B. bc, C. cd, D. ac
C: cd
Answer: C: cd 
Explanation: None