Which of the Following Statements Represents a Possible Measure of Success

Which of the following statements represents a possible measure of success in Step 1-define the problem of the five-step marketing research approach?

A) You have three weeks and $10,000 to determine if it is going to be profitable to serve breakfast on weekdays or not.
B) If three year olds like this product, then it stands to reason that four-year olds will like it even more.
C) Use mail questionnaires, not focus groups.
D) Let's identify the most cost effective method of advertising.
E) If observations show that children like Toy A more than Toy B in terms of hours spent playing with it, then we will move ahead with making Toy A.