Because the International Poverty Line Is $1

Because the international poverty line is $1.90 a day at purchasing power parity, the poverty line in each country is the amount that will allow you to buy a basket of goods equivalent to what $1.90 would buy in the:

A) United States.
B) richest country that uses the index.
C) poorest country that uses the index.
D) average economy of all the countries that use the index.