Which statement best explains the purpose of United States v. Nixon?

a) The case was to impeach President Nixon for abuses of power based on the Watergate cover-up.

b) The case was to secure President Nixon’s tape recordings for purposes of investigating the Watergate break-ins.

c) The case was to prosecute members of the White House for their connection to the leaking of the Pentagon Papers.

d) The case was to prosecute President Nixon for the purposes of recovering financial losses to the government.