Which of the Following Statements Most Accurately Describes the Role

Which of the following statements most accurately describes the role of banks in the United States between the Civil War and WWI?

A) The U.S., which had the largest economy in the world, also had the largest banks in the world.
B) Banking reforms increased the ability of state banks to issue their own notes.
C) Compared to state banks, national banks generally had higher reserve requirements and more restrictions on how they could handle their assets.
D) Those who borrowed money at fixed interest rates gain significantly during deflationary periods.