Why did the author conduct the research at Indiana University?

A、The author did it as the required routine job to be done with any overseas students;
B、 It was a part of the research into the integration level of different groups of students with different nationalities and their satisfaction level of their overseas study life.;
C、The author wanted to know how well Chinese students are integrated into American campus life and how they feel about their overseas study life.;
D、null