HELP ME PLEASE!

Which statement accurately describes how the presidential election of 2008 was unique in American history?

(a) George W. Bush became the first person elected to a third consecutive term of office as president.

(b) John McCain became the first armed forces veteran to be nominated for president by a major party.

(c) Hilary Clinton became the first woman to be a serious challenger for a major party's presidential nomination.

(d) Al Gore became the first third-party candidate to win a majority of the popular vote but lose the election.