What was the overall result of the Free-Soil Party's participation in the election of 1848?

A. The Free-Soil Party candidate won the election and the Wilmot Proviso was passed.

B. By receiving 10 percent of the vote, it was clear its antislavery platform had captured Americans’ attention.

C. The Free-Soil Party received more votes than the Whigs but still lost the election.

D. The support for the Free-Soil Party cost the Whigs the election.