In Some Countries, the Official GNI Per Capita Measured at PPP

Multiple Choice

In some countries, the official GNI per capita measured at PPP data does not reflect the actual the total annual income because:

A) it doesn't consider differences in the cost of living.
B) it gives a static picture of development.
C) it fails to include income earned from other countries in the form of dividends.
D) large amounts of economic activity may be in the form of barter agreements.