实证分析和规范分析的区别.

实证分析和规范分析的区别.
求经济学高手指教.说的尽量简洁易懂一些.不要复制粘贴的大理论.
这里还有一个作业题.请帮做一下.
Which of the statements below is relatively more normative in nature?
A) Raising tax rates on the rich will reduce economic growth.
B) An increase in the minimum wage will increase the unemployment rate.
C) It is important to reduce the unemployment rate.
D) The distribution of income is determined primarily by the quality of education received.
E) Nations that foster equality of opportunity rather than equality of outcome have higher growth rates and higher average standards of living.