What can we infer from the passage？ 查看材料A.Teenagers

What can we infer from the passage？ 查看材料

A.Teenagers tend to stay at their friends" houses for along time.

B.Relationships with adults may cause unhealthy development in youths.

C.The after-school programs can be used for many different kids.

D.Teenagers do not like the after-school programs.

请帮忙给出正确答案和分析，谢谢！