It can be inferred from the text that Alexander John Elis in his book Music Scales of All Nationalities in the World holds that____
A.
China has a music history of over 8,000 years
B.
ancient China has already developed seven-tone music scales
C.
Chinese traditional music has only a five-tone scale
D.
wind instruments were widespread in China as early as 7,000 to 8,000 years ago