Which of the Following Is Most Accurate About the Market

Which of the following is most accurate about the market for call loans.

A) During the 1920s, the supply of loans increased more than the demand.
B) During the 1920s, credit was being pulled into the stock market by the rising interest rates on call loans.
C) An increased willingness of banks to supply call loans was the decisive factor in causing the bull market.
D) The interest rates on call loans decreased significantly during the 1920s.