It Is Argued in This Article That the Main Reason

It is argued in this article that the main reason why the majority of Korean banks are supported by Korean clientele is which of the following?

A) With the large influx of Korean immigrants in the last decades, these banks are needed to support this growing economic community.
B) The main reason that Korean immigrants need banks owned by Koreans is because of language access.
C) In reality, Korean banks are not primarily supported by Koreans, but rather by other Asian immigrant groups in America.
D) None of the above.