"Which of the following is a difference between the power of nineteenth-century presidents and that of the modern president according to the passage?
Presidents in the nineteenth century had to contend with congressional committees, which had significant powers in foreign affairs.
A
Modern presidents have acquired the power of the purse, which allows them to spend freely on foreign affairs.
B
Modern presidents must win wars in order to keep members of Congress from criticizing their foreign policy.
C
Presidents in the nineteenth century were more likely to support intervention in foreign affairs."
