【2016模拟题】阅读下列短文，从每题所给的四个选项中(A、B、C和D)中，选出最佳选项。
(2015·江苏)
In the United States alone，over 100 million cellphones are thrown away each year.Cellphones are part of a growing mountain of electronic waste like computers and personal digital assistants.The electronic waste stream is increasing three times faster than traditional garbage as a whole.
