In a Study at Stanford University by Walton & Cohen

In a study at Stanford University by Walton & Cohen (2011) , what was the result of a one-time treatment that framed the stress of fitting into the college experience as common and limited in duration?

A) It significantly improved the grade point averages (GPAs) , happiness ratings, and health of European American students at Stanford University 3 years later.
B) It significantly reduced the grade point averages (GPAs) , happiness ratings, and health of just European American students at Stanford University 3 years later.
C) It significantly improved the grade point averages (GPAs) , happiness ratings, and health of African American students at Stanford University 3 years later.
D) It significantly reduced the grade point averages (GPAs) , happiness ratings, and health of African American students at Stanford University 3 years later.