A nurse is reinforcing teaching about elimination with an adolescent who is paralyzed from the waist down following a spinal cord injury. Which of the following statements by the adolescent indicates a need for further teaching?

C I need to catheterize myself twice a day.' A I do my wheelchair exercises sitting in my chair.' B I carry a water bottle with me because I drink a lot of water.' D I use a suppository every night to have a bowel movement.'