The Present State of Our Knowledge About Consumer Behavior Is

The present state of our knowledge about consumer behavior is such that:

A) the behavioral sciences provide the marketing manager with a complete explanation of the "whys" of consumer behavior.
B) a marketing manager usually must blend intuition and judgment with findings from the behavioral sciences to explain and predict consumer behavior.
C) relevant market dimensions can be easily identified and measured using "psychographics."
D) marketing research can't tell us much more about specific aspects of consumer behavior.
E) All of the above are true statements.