During Richard Nixon's presidency, corruption at the highest levels of government threatened free elections and democracy. How did the public find out about this corruption?

A.
Newspaper reporters wrote article after article as they investigated claims of corruption.

B.
Police investigators filed reports which were then made public by the White House.

C.
Members of Congress who knew about the corruption made speeches demanding the president's resignation.

D.
Justices of the Supreme Court brought charges against the president.