The correct answer to the question is B. In an oligarchy, the power rests with a small group of people who can be distinguished by wealth, religious, education, family ties, or military control. These individuals have enough power to turn the country to benefit them. Their relationship with each other is how power is maintained.
Most often, oligarchies are controlled by families whom pass their influence down generations, however, inheritance isn’t a necessity. It is an elite and organized minority group and it is hard for the average individual to break into the group. Oligarchy countries include Russia, China, Turkey, Iran and South Africa.