The word "get-off" (Line 2, Para. 3) could be replaced by ______.

A．The similarities between jazz and the other dance music.
B．The popularity of jazz.
C．The characteristics of jazz.
D．How the jazz musicians display their individuality.

A．Jazz musicians emphasize the rhythm during all the musical phrases.
B．Jazz musicians strive for an individual style of which the other musicians don't think much.
C．Jazz is the most popular music in America in the twenties.
D．As multi-chorus solos became popular, more ways of playing jazz turned up.