TOEFL Listening: TPO-TOEFL阅读TPO - TRWD991IU5896Y3UN$

Based on the information in paragraph 3 and paragraph 4, what can be inferred about the states of North Dakota, South Dakota, and Texas mentioned at the end of paragraph 1? A. They rely largely on coal-fired power plants. B. They contain remote areas where the winds rarely die down. C. Over 1 percent of the electricity in these states is produced by wind farms. D. Wind farms in these states are being expanded to meet the power needs of the United States.