A nurse observes an assistive personnel (AP) preparing to obtain blood pressure with a regular size cuff for a client who is obese. Which of the following explanations should the nurse give the AP?

- "The reading will be inaudible if the cuff is too small for the client."
- "The width of the cuff bladder should be 75% of the circumference of the client's arm."
- "As long as the cuff will circle the arm the reading will be accurate."
- "Using a cuff that is too small will result in an inaccurately high reading."