We can infer from the passage that the author ______.

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.

A．marked difference from the cat
B．ability to develop a strong attachment to man
C．its submissiveness to man
D．its meekness as well as its defiant nature