The Patient Has an Order to Be Off the Floor

The patient has an order to be off the floor for 15 minutes every 2 hours to smoke a cigarette.The patient has just returned from his "cigarette break." The nurse is about to take the patient's radial pulse and should:

A) wait about 15 minutes before taking his pulse.
B) use her thumb to detect the pulse and get an accurate count.
C) press hard to detect the pulse and get an accurate count.
D) take his pulse for 15 seconds and multiply by 4.