Residents of Poor Countries Tend to Have Higher Rates of Infant

Residents of poor countries tend to have higher rates of infant mortality because:

A) residents of wealthy countries have all their health care provided by the government.
B) residents of poor countries tend to have fewer children than do residents in wealthy countries.
C) consumers in poor countries face higher tax rates and have less to spend on health care.
D) lower per capita real gross domestic product (GDP) growth rates allow for less spending on health care.
E) mothers in poor countries tend to wait until they are much older before having children.