The correct statement that compares the human rights violations that took place in Cambodia and Rwanda is:
It was difficult to confirm information about violations in Cambodia, while journalists reported on the violations in Rwanda as they were happening.
This statement accurately reflects the differences in the documentation and reporting of human rights violations in these two contexts. The Cambodian genocide under the Khmer Rouge took place during a time when information was scarce and difficult to verify, while the Rwandan genocide occurred with international media coverage that documented the events as they unfolded.