Surveys of Participants in the Seeds of Peace Program, Which

Surveys of participants in the Seeds of Peace program, which brings together Israeli and Palestinian teenagers for a three-week summer camp experience, showed that participation in the program led to more favorable intergroup attitudes. Nine months after the program, these attitudes

A) became even more favorable.
B) waned a bit but were still more favorable than they had been at the beginning of the program.
C) became less favorable than they had been at the beginning of the program.
D) remained just as favorable as they were at the end of the program.