Which statement best explains how the following supporting detail helps develop a central idea of the text? Players can change the sound of their instruments by adjusting their finger positions on the strings as well as by altering the speed and pressure of the bow, allowing a vast range of different musical sounds and moods.

A. It offers an explanation of how string players can create many expressive sounds.
B. It gives instructions to allow a reader to learn the process of playing a stringed instrument.
C. It presents facts that prove that stringed instruments have a beautiful sound.
D. It provides evidence to support the claim that string instruments are more expressive than woodwind instruments.