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

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

A client who is postoperative and has a urine output of 50 mL for the past 3 hr.

A client who is scheduled for discharge and has a 38.4° C (101.1° F) temperature this morning.

A client who has pneumonia and has developed wheezing.