Which One of the Following Is True

Which one of the following is true?

A) For every country that experiences an increase in its growth rate, there must be another experiencing a decline.
B) Small changes in the annual growth rate amount to a measurable difference in the long-term growth trend of a country.
C) Restricting imports will enhance a country's economic growth.
D) A well-defined system of property rights benefits only the wealthy, and consequently it produces income inequality that will stifle economic growth.