A. Which of the following is true about charcoal?
It is made by mixing carbon and clay.
b. It has been a main medium used by Japanese artists throughout history.
c. Charcoal is difficult to work with and expensive.
d. There are two forms of charcoal that are popularly used.

there are 2 forms of charcoal that are popular

a chromatic scale uses the twelve tones of the octave, while a regular scale only uses eight, or seven different notes (as the first note is played twice)

the amount of fabric used and the collar fitting and sleeve lenghts are the two options, that to me, make the most sense.

hope it ,

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