The Nurse Administers an Antitussive/expectorant Cough Preparation to a Client

The nurse administers an antitussive/expectorant cough preparation to a client with bronchitis. Which of the following responses indicates to the nurse that the medication is effective?

A) The amount of sputum the client expectorates decreases with each dose administered.
B) Cough is completely suppressed, and the client is able to sleep through the night.
C) Dry, unproductive cough is reduced, but her voluntary coughing is more productive.
D) Involuntary coughing produces large amounts of thick yellow sputum.