I believe the answer is D. Here is a really good link to help you figure out the concept.
http://www.takadimi.net/documents/Takadimi%20short%20guide%20for%20Web.pdf
Hope this helps!
Answer:
B. Clefs
Explanation:
Neither of the other ones make sense plus I already knew clef had something to do with music.
Hope this helps. Plz give brainliest.
B, false, hope i am helpful
Your answer is a pure and noble