Which of the following is true regarding the use of Codeine for cough suppression?

A. Opioids are not expectorants; they do not thin or loosen mucus. Their role in cough management is as antitussives, suppressing the cough reflex. B. Opioids do not increase coughing; they suppress the cough reflex by acting on the central nervous system. C. Opioids like codeine can reduce pain when combined with an antitussive effect, which is beneficial in clients who experience painful coughing or chest discomfort from frequent coughing. D. Combining opioids with decongestants is not a standard recommendation and should be done cautiously, as interactions or additive side effects (e.g., CNS depression) can occur.