Regarding "Marketing Research" and "Marketing Information Systems

Regarding "marketing research" and "marketing information systems":

A) marketing information systems gather, access, and analyze data from intracompany sources, while marketing research handles all external sources.
B) both tend to focus on nonrecurring information needs.
C) marketing information systems tend to increase the quantity of information available for decision making, but with some decrease in quality.
D) most firms have gone "too far" trying to apply modern decision-making techniques.
E) None of the above is true.