A patient has received instructions on the use of an Acapella device.Which action by the patient indicates an understanding of the teaching?

A) Complains of not being able to use an aerosol drug with the device.
B) Turns the frequency adjustment dial to medium resistance.
C) After completing one cycle,repeats for 2 more breaths.
D) After removing the mouthpiece,performs 1 to 2 forceful exhalations and "huff" coughs.

Frequency Adjustment

The process of altering the rate or pitch of audio elements or electronic signals, commonly applied in medical devices, broadcasting, and sound production.

Aerosol Drug

Medication delivered in the form of a mist inhaled into the lungs, typically used for respiratory conditions.

Huff Coughs

A technique of coughing with an open glottis that is less forceful than a normal cough, designed to move mucus up the airways.