The statement that accurately describes inequality in the U.S. is:
The median rural income is less than the median urban income.
While the U.S. does experience significant inequality, it is not the "most unequal country in the world" when compared to nations with extreme income disparities. Additionally, there is a median income gap not only between men and women but also between different ethnicities. Finally, it's generally noted that there is greater inequality in the U.S. compared to many European countries.