TOEFL Listening: TPO-TOEFL听力TPO - _7G9U9SMY31IA71NR$

What is the professor's point when she talks about a soup shop? A. It is difficult to understand how some customers react to advertising B. It is important to ensure the quality of a product before advertising it C. A poorly chosen advertising message can have negative consequences D. Some businesses remain unsuccessful even when they focus on the four M's