What Was the Importance of the Twelfth Amendment, Which Was

What was the importance of the Twelfth Amendment, which was ratified in 1804?

A) It created a requirement that electors cast two votes: one for president and one for vice president.
B) It created the right to vote for all Americans.
C) Women gained the right to vote.
D) It abolished the poll tax and literacy test that were used to deny suffrage to minority groups.
E) It mandated that two political parties must always exist in order to give balance to the electoral process.