A Male Patient Who Suffered a Spinal Cord Injury Is

A male patient who suffered a spinal cord injury is learning to perform self-urinary catheterization before being discharged to home. The statement made by the patient that indicates more instruction is needed is:

A) "It is a sterile procedure."
B) "The catheter should be pinched before it is withdrawn."
C) "The penis is lifted to a 60- to 90-degree angle for catheter insertion."
D) "The procedure is done sitting on the toilet."