Answer: I think it might be B, but I'm not entirely sure. I don't completely understand pitches and octaves.
Good Luck!
Warning! Don’t download any link it tracks ur ip and it’s a virus!!
2D design is flat design, like drawing or sketching.
http://resources.hwb.wales.gov.uk/VTC/ngfl/dandt/75/Tutorials/2D%20Design/Section1.pdf
use this pdf to learn how to use it