From an Anthropological Perspective, the Main Reason Wall Street Banks

From an anthropological perspective, the main reason Wall Street banks are not the bastions of individualism and cold rationalism many think they are is that

A) bankers can be quite compassionate and donate money to many worthy causes
B) personal relationships and local knowledge are critical to successful transactions
C) the government heavily regulates the decisions bankers make
D) certain bankers think more like Marxists than neoclassical economists