The correct answer (c.) Vienna. Vienna is the capital and largest city in Austria and was the European city was divided into four sectors during Cold War. These four sectors or powers were the United State, United Kingdom, France and the Soviet Union.
B is the answer to your question
Ethnic groups in Rwanda. The largest ethnic groups in Rwanda are the Hutus (about 85% of the population), the Tutsis (14%), and the Twa (1%). Starting with the Tutsi feudal monarchy rule of the Tenth century, the Hutus were a subjugated social group.