大全300题--到底哪个答案正确？

300 Following the destruction of the space shuttle CHallenger,investigators concluded that many key people emplyed by the NASA and its contractors work an excessive amount of overtime that has the potential of causing errors in judgment.

A   overtime that has the potential of causing

B  overtime that has the potential to cause

c   overtime that potentially can cause

D  overtime, a practice that has the potential for causing

E overtime,a practice that can,potentially ,cause

这题的答案应该是什么？D 还是E？has the potential for 和potentially 在意思上有什么区别么？望NNS解答一下好吧？

E.

potentially  adv.

has the potential for sth.  有...潜力

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