Between 1987 and 2000,the Market for Women's Athletic Wear Increased

Between 1987 and 2000,the market for women's athletic wear increased by more than $3 billion while the market for men's athletic wear remained unchanged.Women are no longer satisfied with sporting goods stores that act as if they are serving women's needs by carrying jogging bras and biking shorts and otherwise assuming women can use male gear.Like men,women want a product that will increase their performance,but they also want something else-a product that will be in tune with their bodies.
-Refer to Women's Athletic Wear.One of the biggest differences between men and women consumers is that men tend to stay loyal to a store.Women are much more ready to shop around-perhaps because they demand more from their products than men.Andrea wants to start running,but she has been told she needs to find a well-fitting running bra.What is Andrea at the first stage of?

A) product differentiation
B) the consumer decision-making process
C) the market segment
D) product positioning