The Nurse Is Instructing a Patient to Use a Corticosteroid

The nurse is instructing a patient to use a corticosteroid inhaler.Which statement by the patient indicates the need for further teaching?

A) "I will shake the inhaler before I use it."
B) "I need to rinse my mouth after I use the inhaler."
C) "I will use this when I'm lying in bed in the morning."
D) "After I inhale,I will hold my breath and then breathe out slowly."