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: Pharmacology
True about ACE inhibitors are all except: 
Select and explain. 
A. Contraindicated in asthma, B. Lacks postural hypotension, C. Decreases potassium concentration, D. Does not affect quality of life
C: Decreases potassium concentration
Answer: C: Decreases potassium concentration 
Explanation: The  adverse effect profile of all ACE inhibitors is similar. One adverse effect is:
Hyperkalaemia: This is likely in patients with impaired renal function and in those taking K+ sparing diuretics, NSAIDs or blockers.
In others, significant rise in plasma K+ is rare. It does not cause decrease in K+ concentration.
Reference: Essentials of Medical Pharmacology Eighth Edition KD TRIPATHI page no 531