The first alternative is correct (A).
The Second World War led Korea to be divided between two countries, North Korea, influenced by the USSR, and South Korea, with American influence. In 1950 the two sides entered a violent war that lasted 3 years and isolated any relationship between the two countries.
North Korea has become the most closed country in the world, with a communist economic model, where the population has no access to any kind of Western culture.
The country is dominated by a dictatorial clan, which is in the third generation, with Kin Jong-Un as the agent.