In the Context of Cultural Diversity,the Old "Melting Pot" Model

In the context of cultural diversity,the old "melting pot" model refers to:

A) the process of finding the best fit between the employee and the job.
B) how immigrants were expected to assimilate their culture and language into the mainstream.
C) the corporate culture found in most firms today.
D) how the new affirmative action programs were used to correct past discrimination problems.