Kurt Lewin Is Quoted as Saying,"There Is Nothing So Practical

Kurt Lewin is quoted as saying,"There is nothing so practical as a good theory." This quote is best interpreted as meaning that

A) hypothesis testing is limited to the quality of the underlying theories.
B) to solve difficult social problems, one first needs to understand the underlying reasons why they occur.
C) basic research is more important than application of the research.
D) social psychologists should focus on solving world problems.
E) applied research is more important than basic research.