A nurse is receiving report on a group of clients. Using the ABCD-E priority framework, which of the following clients should the nurse see first?

A client who is scheduled for discharge and has become febrile this morning

A client who has early dementia and awoke confused to their location this morning

A client who has pneumonia and has developed wheezing

A client who is postoperative and has a urine output of 50 mL for the past 4 hours