Which of the following statements about the 1994 genocide in Rwanda is most accurate? A. Hutu extremists were responsible for killing over one million Tutsis. B. Tutsi extremists were responsible for killing over one million Hutus. C. Tutsi and Hutu extremists killed each other in roughly equal numbers. D. The United Nations intervened before either the Hutus or the Tutsis managed to inflict serious casualties. Please select the best answer from the choices provided.