Country a Had a Population of 2,000, of Whom 500

Country A had a population of 2,000, of whom 500 worked an average of 8 hours a day and had a productivity of 31. Country B had a population of 3,000, of whom 2,100 worked 6 hours a day and had productivity of 20.

A) Country A had the higher level of real GDP and real GDP per person.
B) Country A had the higher level of real GDP and Country B had the higher level of real GDP per person.
C) Country B had the higher level of real GDP and Country A had the higher level of real GDP per person.
D) Country B had the higher level of real GDP and real GDP per person.