A Study (Staw 1974) Was Conducted Among Those Who Signed

A study (Staw 1974) was conducted among those who signed up for the R.O.T.C. during the Vietnam era draft years. In this study, which group of individuals became comparably better soldiers?

A) those who would have been drafted
B) those who would not have been drafted
C) those who had to undergo a difficult initiation into the R.O.T.C.
D) those who had to undergo a mild initiation into the R.O.T.C.