问题详情

Cacioppo holds that

A．sites like Facebook serve as a good supplement for face-to-face communication.

B．eating celery makes you feel good immediately, but brings no sustainable pleasure.

C．it varies from people to people for the number of friends needed to avoid loneliness.

D．popular kids in school and super stars are the loneliest people in the world.

请帮忙给出正确答案和分析，谢谢！