Answer:
The answer is A
Explanation:
The C-Major scale is one of the first scales we learn because it doesn't contain any sharps or flats. The C-Major scale is made of the notes: C, D, E, F, G, A, B, C. If you were to play this scale on the piano, it would contain only white keys. Since there are no sharps or flats in C-Major, it is considered to have a "pure" character.