The Client Has Myasthenia Gravis

The client has myasthenia gravis. The highest priority client teaching is:

A) instructing the client to take the drug on a strict schedule to avoid respiratory muscle weakness.
B) informing the client if a dose of the drug is missed to double the drug dose when the next dose is scheduled.
C) instructing the client that if muscle weakness occurs, to rest, and if it persists to call the healthcare provider the next day.
D) informing the client that if respiratory distress occurs, rest, double the drug dose, and call the healthcare provider.