Which of the following excerpts MOST supports the idea that blues music is rooted in suffering?
A.
Slaves often sang songs and spirituals while working, and this music formed the foundation of blues music.
B.
The name comes from "blue notes," which are sung or played at a much lower pitch than the rest of the song.
C.
After the Civil War, many African Americans migrated north in search of jobs, and they took the blues with them.
D.
Blues music serves as a powerful influence in many modern genres of music, including rap, country, and rock.