A nurse manager is providing teaching to a newly licensed nurse about Mantoux testing. Which of the following clients should the nurse manager include as an example of a client who might manifest a false-positive reading?

A client who has received the bacille Calmette-Guérin vaccine within the last 10 years

A client who has undergone radiation therapy within the last 3 years

A client who has acquired immune deficiency syndrome

A client who has lived in a country where tuberculosis is endemic