How did the banking industry support the economic boom during the 1920s?
A. The banking industry restricted consumers' ability to make major purchases on credit.

B.The banking industry extended credit only to rich Americans who they knew would pay them back.
C. The banking industry adopted policies that made it more difficult to
purchase a house, which increased the value of existing houses.
D. The banking industry made it easier to borrow money, leading to an
increased demand for cars and other high-priced goods.