Per capita use of energy is highest in the United States versus other countries, and is thought to be caused by differences in standard of living. The chart below shows total energy use by country. Which of the following statements explains why the United States is NOT first and second on the chart?

A)Overall energy consumption in a country is related to its population size.
B)The United States has a smaller power (electricity)supply than other countries.
C)The United States provides better data than other countries.
D)The United States has underreported population sizes compared to other countries.