A nurse is caring for a child who has retinoblastoma and is receiving chemotherapy. Which of the following findings should the nurse identify as an indication that the child is developing leukopenia from the treatment?

The child gets lightheaded when going from a sitting to a standing position.

The presence of an acute otitis media infection.

Large, darkened discoloration to client's skin occurs whenever their blood is drawn.

The child's gums bleed whenever they brush their teeth.