Based on the GDP information in the table below for 2 countries: Country A Country B GDP per capita in 2020 $30,000 $25,000 GDP per capita in 2021 $32,000 $30,000 a. Country A has improved their standard of living in 2021 more than country B. b. Countries A and B have improved their standard of living in 2021 but A has higher standards of living than B. c. Country B has a higher GDP in 2021 than country A. d. Countries A and B have improved their standard of living in 2021, but A's living standards have lowered compared to B