Which one among the following is home to the endangered mountain gorillas in Africa?

The Virunga Mountains, a chain of volcanoes spanning the borders of Rwanda, Uganda and the Democratic Republic of the Congo, are the primary habitat of the endangered mountain gorillas (Gorilla beringei beringei). Virunga National Park in the DRC is one of the most important conservation sites for these gorillas. Mount Kenya and Mount Kilimanjaro are not gorilla habitats, and the Ngorongoro Crater in Tanzania is famous for its diverse savanna wildlife but not mountain gorillas.