PREP 一题

93. Those skeptical of the extent of global warming argue that short-term temperature data are an inadequate means of predicting long-term trends and point out that the scientific community remains divided on whether significant warming will occur and what impact will it have if it does.

A. on whether significant warming will occur and what impact will it have if it does.

B. on whether warming that occurs will be significant and the impact it would have

C. as to whether significant warming will occur or the impact it would have if it did

D. over whether there will be significant warming or the impact it will have

E. over whether significant warming will occur and what impact it would have

请帮忙确定一下答案是否为E，谢啦！

93. Those skeptical of the extent of global warming argue that short-term temperature data are an inadequate means of predicting long-term trends and point out that the scientific community remains divided on whether significant warming will occur and what impact will it have if it does.
            

A. on whether significant warming will occur and what impact will it have if it does.  前半部分说warming will occur, 后半部分说如果发生，blabla... 应用虚拟.

B. on whether warming that occurs will be significant and the impact it would have 

C. as to whether significant warming will occur or the impact it would have if it did

D. over whether there will be significant warming or the impact it will have

E. over whether significant warming will occur and what impact it would have (E is the best and clearly express the meaning)