According to the Reports by Energy Policy Institute at the university of Chicago, Which Country is the Most Polluted Country Globally?

According to the Reports by Energy Policy Institute at the university of Chicago, Which Country is the Most Polluted Country Globally?

A. India
B. Nepal
C. China
D. Bangladesh 

Bangladesh is today the world’s most polluted country. Air pollution shortens the average Bangladeshi’s life expectancy by 6.2 years, relative to what it would have been if the World Health Organization (WHO) guideline was met.