A Staff Nurse Tells the Nurse Manager, "I Don't Know

A staff nurse tells the nurse manager, "I don't know how you do it. You manage the unit, work extra shifts, and have so many people depending on you and yet you seem so calm and in control." What explains this nurse's perception?

A) Nurse managers don't do much direct client care, so their work is predicable.
B) The staff nurse is trying to manipulate the manager.
C) The manager has excellent coping skills and high stress tolerance.
D) Some people do a very good job of hiding their stress.