Which of the Following Best Describes the Role of the Researcher

Which of the following best describes the role of the researcher in the problem definition stage of the marketing research process?

A) Researchers, because they know how to define problems, should undertake this step independently and without interference of managers.
B) The researcher should immediately conduct a private investigation upon learning of the first client meeting so as to be aware of the industry and the firm from the beginning.
C) Problem definition should be left up to managers alone, as researchers will almost always define the problem too broadly, ensuring that too much research will be conducted.
D) Because they are accustomed to dealing with problem definition, researchers should help managers to define the problem accurately, as this will enable them to provide the manager with valuable research information.
E) Problem definition should be left up to managers alone as researchers will almost always define the problem too narrowly, thus ensuring that the research may easily focus on the defined problem.