As of 2014, using real GDP per person as a measure, we would classify

a.Japan as an advanced economy, the United Kingdom as a middle-income country, and Argentina as a poor country.

b.Japan and India as advanced economies and Mexico as a poor country.

c.Canada as an advanced economy, Mexico as a middle-income country, and Pakistan as a poor country.

d.the United States and Mexico as advanced economies and Bangladesh as a middle-income country.