While auscultating heart sounds, asking the client to turn onto a left lying position would help the nurse assess the presence of which of the following?

A. Aortic murmurs: These are best assessed with the client in an upright or slightly leaning forward position, not specifically the left lateral position. B. Atrial repolarization: This is not directly assessed by body position; it is part of the ECG assessment. C. The first heart sound: The first heart sound (S1) is heard throughout the auscultation process and is not specifically enhanced by a left lateral position. D. Mitral stenosis: The left lateral position allows better auscultation of the mitral area, where mitral stenosis murmurs are best heard.