In Which of the Following Situations Would Test Marketing Be

In which of the following situations would test marketing be the most appropriate method for marketing research?

A) The city of Nashville would like to know how many people plan to come to see the Tennessee Titans football team play next year.
B) The manufacturer of Motrin wants to know how consumer response to the brand's sinus headache medication.
C) A mall owner wants to know what proportion of its target market visit the mall more than once weekly.
D) A battery manufacturer wants to know how consumers feel about its recycling efforts.
E) In all of the above situations, test marketing would be the most appropriate method for marketing research.