PLEASE HELP!! First to answer correctly gets brainliest

Review the chart to answer the question that follows.
Total Population GDP
Country A 5,000 10,000
Country B 10,000 15,000
Country C 2,000 8,000
Country D 1,000 5,000

Which additional type of data would be most important for comparing the standard of living of these countries?
A. Share of budget set aside for defense
B. Percent of territory that is water
C. Number of airports
D. Literacy rate

I think it is either A or D but I don't know which one!!! PLEASE HELP

Which of the following best describes the 1957 events at central high school in little rock, arkansas? -governor faubus resisted the school’s integration with national guard troops, and president eisenhower sent federal troops to enforce integration.-under governor faubus, little rock police first fought, then enforced, the order to integrate the school.-president eisenhower sent national guard troops to resist the school’s integration, but governor faubus obtained a court order to dismiss them.-president eisenhower and governor faubus worked together to make the integration process run as smoothly as possible.