Evaluate the following examples, factors, or concerns that illustrate the difficulty in defining some states. Select the answer option that is accurately supported by the facts in the text.a. Although Taiwan seeks reunification with mainland China, the People's Republic of China considers itself and Taiwan to be separate and sovereign states.b. Disagreement about the sovereignty of states is closely tied to the history and geography of places and often involves neighboring states, and sometimes multiple states, claiming a territory.c. Although Western Sahara claims to be a sovereign state, most African countries refuse to recognize its independence from Spain.d. The governments of North and South Korea are committed to maintaining two separate, sovereign states although the United Nations will only award one seat to Korea.e. The Senkaku/Diaoyu Islands are densely populated and desire sovereignty, but they are claimed by several countries.