Many American newspapers attract readers of different political inclination by______.A．sup

Many American newspapers attract readers of different political inclination by______.

A．supporting extremist groups from time to time

B．inviting middle-of-the-road Americans to write articles for them

C．avoiding carrying articles about extremists

D．printing articles representing different political viewpoints

请帮忙给出正确答案和分析，谢谢！