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: Biochemistry
Hepatic encephalopathy is caused by an increase of ? 
Select and explain. 
A. Urea, B. Glutamate, C. Ammonia, D. Fattyacid
C: Ammonia
Answer: C: Ammonia 
Explanation: Ans. is 'c' i.e., AmmoniaHepatic encephalopathy is characterized by altered level of consciousness, caused by liver disorder.Liver disorder is characterized by elevation of ammonia. As liver is considered with detoxification of ammonia to form urea, in liver failure ammonia level is elevated.Hepatic encephalopathy basically presents with manifestations of CNS depression