Between 1970 and 2006,the Poverty Rate in East Asia Declined

Multiple Choice

Between 1970 and 2006,the poverty rate in East Asia declined dramatically from 58.8 percent to 1.7 percent,while the poverty rate in Sub-Saharan Africa decreased from 39.9 percent to only 31.8 percent.The main reason for this is that

A) the population growth rate decreased in East Asia and increased in Sub-Saharan Africa.
B) Governments in East Asia increased transfer payments to poor families over this period of time.The governments of Sub-Saharan Africa had practically no transfer payment programs from 1970 to 2006.
C) The countries of East Asia have progressive income tax systems.The countries of Sub-Saharan Africa all have regressive income tax systems.
D) East Asia experienced higher economic growth than Sub-Saharan Africa.