A Young Adult Patient Was Involved in a Motorcycle Accident

A young adult patient was involved in a motorcycle accident.The patient was in the intensive care unit of the hospital for 2 months with immobility and was just discharged to a rehabilitation hospital.The patient asks the nurse,"Why am I so weak?" What is the best response from the nurse?

A) "When you are in bed for a long time, your body begins to break down its own protein."
B) "When you don't use it, you lose it."
C) "You haven't eaten much for the past couple of months."
D) "Your body has spent energy trying to heal itself by increasing the metabolic rate."