Sentence Correction

Scientists have developed a vast network of seismographs that monitor earthquakes, volcanic eruptions, and powerful explosions throughout the world to facilitate disaster response, scientific research, and global security.

A. have developed a vast network of seismographs that monitor earthquakes, volcanic eruptions, and powerful explosions
B. have developed a vast network of seismographs so that they can monitor earthquakes, volcanic eruptions, and powerful explosions
C. monitor earthquakes, volcanic eruptions, and powerful explosions throughout the world with a vast network of seismographs that they have developed
D. monitor earthquakes, as well as volcanic eruptions and powerful explosions, with a vast network of seismographs throughout the world that they have developed
E. have developed a vast network that monitors earthquakes, volcanic eruptions, and powerful explosions throughout the world with seismographs

What is wrong with option E?

OA A