Which of the Following Is NOT True of the Presidential

Which of the following is NOT true of the presidential election of 1800?

A) John Adams's acceptance of defeat established the precedent of the peaceful transfer of power in the United States.
B) The importance of slavery and the three-fifths compromise was demonstrated: without slaves counted as part of the South's population, Thomas Jefferson would have lost.
C) The election demonstrated the importance of mobilizing large numbers of voters with more modern campaign techniques, which the Republicans effectively employed.
D) The controversy surrounding who would be president led to the passage of the Twelfth Amendment, which changed the operation of the electoral college.
E) Thomas Jefferson's victory in the New England states proved to be key to his election.