问题详情

What can be inferred from the passage？
[A] 11 percent of boys in America smoke before their fourth grade.
[B] Nicotine is a part of cigarette.
[C] Children form. values in the fourth grade.
[D] Parents who cannot stop smoking should force their children to stay away from it.请帮忙给出正确答案和分析，谢谢！