Levi Strauss Recently Introduced Its New Totally Slimming Jeans

Levi Strauss recently introduced its new Totally Slimming jeans.The idea for the jeans came from a group session conducted last August in which a group of moms made it clear they were tired of low-rise styles.Instead they wanted jeans that were comfortable while covering-up problem areas,and showing off their figures.Levi's used this _____ data as the basis for designing this new line of jeans.

A) primary
B) secondary
C) dichotomous
D) convenience
E) ethnographic