The nurse detects a possible extra heart sound while assessing an adult client. To verify this finding, which action should the nurse take?

A. Use a Doppler ultrasound to hear the heart beat: A Doppler ultrasound is typically used for assessing blood flow, not for auscultating heart sounds. It is not necessary for detecting an extra heart sound.B. Auscultate for one minute with the stethoscope's diaphragm: The diaphragm of the stethoscope is better for high-pitched sounds, such as lung and heart murmurs, but it is not ideal for listening to low-pitched sounds, such as extra heart sounds. This could miss certain heart sounds.C. Listen to the heart sounds using the bell of a stethoscope: The bell of the stethoscope is best for listening to low-pitched sounds, such as extra heart sounds (S3, S4, or murmurs). Using the bell helps the nurse detect these low-frequency sounds more effectively, making it the best action to verify the finding.D. Obtain a pulse oximeter reading from two extremities: A pulse oximeter measures oxygen saturation and would not provide information regarding heart sounds. This action does not help in verifying the presence of extra heart sounds.