Brenda and Dorothy Are Both Generation Xers, but Brenda Is

Brenda and Dorothy are both Generation Xers, but Brenda is three years older. If their attitudes toward shopping were tracked over time we would likely find that:

A) their attitudes would be too difficult to track because Generation Xers are fickle
B) their attitudes would be different because of their age difference
C) their attitudes would be too difficult to track because attitudes fluctuate too much over time
D) their attitudes would be different at some point because Brenda would enter a different age cohort before Dorothy.
E) their attitudes would tend to be the same as they would share the same outlook