A Nurse Is Auscultating the Lungs of a Healthy Male

A nurse is auscultating the lungs of a healthy male patient and hears crackles on inspiration. What action can the nurse take to ensure this is an accurate finding?

A) Make sure the bell of the stethoscope is used, rather than the diaphragm.
B) Hold stethoscope firmly to prevent movement when placed over chest hair.
C) Ask the patient not to talk while the nurse is listening to the lungs.
D) Change the patient's position to ensure accurate sounds.