Which Situation Will Require the Nurse to Obtain a Telephone

Which situation will require the nurse to obtain a telephone order?

A) As the nurse and primary care provider leave a patient's room, the primary care provider gives the nurse an order.
B) At 0100, a patient's blood pressure drops from 120/80 to 90/50 and the incision dressing is saturated with blood.
C) At 0800, the nurse and primary care provider make rounds and the primary care provider tells the nurse a diet order.
D) A nurse reads an order correctly as written by the primary care provider in the patient's medical record.