请教OG 11th 86

Journalist: In physics journals, the number of articles reporting the results of experiments involving partice accelerators was lower last year than it had been in previous year. Several of the particle accelerators at major research institutions were out of service the year before last for repairs, so it is likely that the low number of articles was due to the decline in availiability of particle accelerators.

Which of the following, if true, most seriously undermines the journalist's argument?

D Particle accelerators can be used for more than one group of experiments in any given year.

E Recent changes in the editorial policies of several physics journals have decreased the likelihood that articles concerning particle-accelerator research will be accepted for publication.

答案是E。我对E没有疑问。但我觉得D也是对的。

ETS对D的解释是：If the accelerators can be used for multiple experiments, then it is reasonble to expect more articles related to them, not fewer. 可这不正好就undermine了原文的结论么？

请指教！