Using the information below, which country is most likely to have the highest standard of living?
- ABangladesh: birth rate $27$, death rate $10$, life expectancy $58$, infant mortality rate $93$
- BBhutan: birth rate $36$, death rate $14$, life expectancy $53$, infant mortality rate $107$
- CBotswana: birth rate $31$, death rate $21$, life expectancy $40$, infant mortality rate $57$
- DBrunei: birth rate $25$, death rate $5$, life expectancy $72$, infant mortality rate $22$