In the course of her examine, Charlotte's doctor used a stethoscope and place it on her chest. He then placed his
 fingers on her wrist, and then he used a sphygmomanometer. Which best lists the order he took her vitals?
 O respiratory rate, heart rate, blood pressure
 O blood pressure, heart rate, respiratory rate
 O heart rate, blood pressure, respiratory rate
 O respiratory rate, blood pressure, heart rate