The nurse is preparing to assess the sinuses of an adult client using direct percussion. Which technique is the most appropriate for this assessment?

A. A closed fist is used for assessing deeper structures, such as kidney tenderness, not the sinuses. B. The hyperextended middle finger is typically used for indirect percussion, not direct. C. The palm is not suitable for sinus percussion as it covers a large area and reduces sensitivity. D. The fingertips of the dominant hand are best for direct percussion of the sinuses to assess for tenderness or fluid accumulation.