The table provides details about four countries. Which country is most likely to have the highest standard of living?
- ACountry A: life expectancy 51, GDP per head $250$, % of labour force in service industries $48$
- BCountry B: life expectancy 51, GDP per head $400$, % of labour force in service industries $52$
- CCountry C: life expectancy 61, GDP per head $450$, % of labour force in service industries $52$
- DCountry D: life expectancy 61, GDP per head $400$, % of labour force in service industries $40$