The author considers the Marxist sociologist' s thesis about the origins of racial prejudice to be______.

A．appease the anti-gun control side
B．satisfy the pro-gun control side
C．be accepted by both parties
D．be accepted by .neither side

A．a greater concentration of middle-class residents in central cities
B．a sharp decline of the life quality in central cities
C．a boom in setting up factories and offices in central cities
D．a rapid development of public transportation