Which of the following is the most accurate with regard to the result of banking deregulation that occurred in the U.S. during the 1980s（）
A. There is a clearer distinction between the functions of commercial banks on the one hand and thrift institutions on the other.
B. Different types of depository institutions are now more similar in the products and services that they provide.
C. Interest-bearing checkable deposits are no longer a major part of the M1 money supply.
