Which of the following is NOT true according to the passage?

Câu hỏi: Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.
The concept of Ukraine as a country was born from the state of Kievan Rus, a powerful state that ruled much of the territory that is modern Ukraine during the 9th to 13th centuries. The Ukrainian language evolved from the Old East Slavonic language that was spoken during the time of Kievan Rus. The first documented use of the word Ukraine dates back to 1187, and the Ukrainian people maintained a strong sense of national identity through centuries of foreign rulership and occupation, during which time Ukrainian nationalists made several bids for independence - some successful, but all short-lived.
Modern day Ukraine was established in 1991, when the USSR dissolved and Ukraine declared itself an independent state. It still bears many scars from its time under Soviet rule, when the country endured two of its biggest tragedies: Holomodor, the great famine of 1932-33, which was brought on by Stalin’s agricultural policies and saw the death of an estimated three to five million people; and the Chernobyl Disaster, the explosion of a nuclear power plant in Chernobyl.
Today Ukraine is still struggling to come to terms with a market economy, although consistent economic growth in the new millennium (after a decade of decline in the 1990s) bodes well. Ukraine’s future depends greatly on its traditionally close ties with Russia, which it relies on for energy. However, Russian and Ukrainian relations are not as close as they once were with the Kremlin even shutting off gas supplies in January of 2006.
Partly because of souring relationships with Moscow, Ukraine has been looking West for trading partners and influences. It recently won the hosting rights to Euro 2012 Football Championships in a joint bid with Poland and is hoping to join the EU by 2015.
(Adapted from https://en.wikipedia.org/)
Which of the following is NOT true according to the passage?
A. The Chernobyl Disaster was the explosion of a nuclear power plant.
B. Ukraine has been looking West for trading partners and influences.
C. Ukraine relies on Russia for energy.
D. Ukraine was established in 1991 when the USSR solidified its position.