Which of the Following Is a Reason for the Increase

Which of the following is a reason for the increase in the number of banks since the mid-1980s?

A) Relaxation of entry requirements into the Australian banking industry.
B) Changes in the regulatory requirements of non-bank depository institutions.
C) The need for a more sophisticated banking system in Australia.
D) Relaxation of entry requirements into the Australian banking industry and changes in the regulatory requirements of non-bank depository institutions.