Which of the following is true (could be more than one): Since 1980, the number of banks in the United States has been increasing dramatically due to deregulation of the industry Small banks control about 70 percent of banking industry assets The financial crisis of 2008, demonstrated that activities such as trading in financial futures and interest-rate swaps have low risk . Banking may be subdivided into at least three categories of banks: community bank; super-regional bank; money center bank