【单选题】

Which of the following best describes why the restrictive banking laws of the 1930' s are still on the book
A．The bank failures of the 1930' s were caused by restrictive courts.

B．Banking has not changed in the past 50 years.
C．The banking system is too restrictive, but no alternatives have been suggested.
D．Legislators apparently believe that banking problems similar to those of the Depression still exist today.