The supreme court's decision in united states v. nixon resulted in nixon's

Question: What was significant about the decision made by the United States Supreme Court in United States v. Nixon?

(A) It meant that the president was protected from investigations by a special prosecutor.

(B) It signified that the president could not tape conversations with advisors in the White House.

(C) It forever changed the way that a president appoints a vice president.

(D) It demonstrated that even a president is subject to the law.

The answer is (D)

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it increased 6 percent and reached that in 1980