The nurse is caring for client with liver failure admitted with hepatic encephalopathy, Lactulose is ordered Q2 hours. What assessment finding should the nurse use to best evaluate therapeutic response of the medication?

The ammonia level has decreased each day starting the lactulose

The liver enzymes AST and ALT. have decreased to normal levels

The client is having 5-6 soft, non-formed stools each day

The client is awake, alert and oriented to their environment