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
Hepatic-encephalopathy may be precipitated by all of the following except - 
Select and explain. 
A. Anemia, B. Barbiturates, C. Hyper kalemia, D. Hypothyroidism
C: Hyper kalemia
Answer: C: Hyper kalemia 
Explanation: None